Hidradenitis suppurativa (HS) is a chronic, inflammatory skin disease that severely impacts quality of life and carries a substantial economic burden.

This multicenter observational study generated real-world evidence on HS in Italy, focusing on clinical profiles, management, and costs. Data were collected from 50 adults at four specialized centers, combining primary data with retrospective administrative data.

Patients with moderate-to-severe disease had longer diagnostic delays (median 1.8 versus 0.7 years), lower symptom control (40.7% versus 95.2%), and worse quality of life (Dermatology Life Quality Index: 11.8 versus 8.0) than those with mild disease. Furthermore, HS was associated with higher costs in moderate-to-severe cases, including greater direct (€2214 versus €873) and indirect expenses (€2435 versus €262).

The findings highlight the social and economic burden of HS and emphasize the need for increased healthcare awareness for earlier diagnosis and better management.

Hidradenitis suppurativa (HS) is a chronic, systemic, inflammatory skin disease characterized by inflammatory nodules, painful abscesses, and draining tunnels. It is associated with significant comorbidities, including inflammatory bowel disease, arthritis, pain, and a reduced quality of life. Unlike psoriasis or atopic dermatitis, it can progress from an inflammatory state to a nonreversible scaring component if not treated early enough and in an evidence-based manner. Until recently, adalimumab has been the only approved treatment for HS. Many conventional systemic treatments are currently used and have an appropriate role in HS therapy, provided they are used correctly in suitable patients. Unfortunately, many therapies, including antimicrobials, are used empirically, leading to continuous cycles of incorrect and inefficient treatment, disease progression, and reduced quality of life. Contributing to the problem is the delay in diagnosis which may be as long as seven years and insufficient or inappropriate intervention.. Capturing the "window of opportunity" is essential for a disease such as HS.

Hidradenitis suppurativa (HS) is a debilitating chronic skin condition challenging to manage. Treatment options range from topical and systemic medications to various surgical procedures. With the expanding knowledge of cytokine signaling pathways, systemic treatment for hidradenitis suppurativa is entering an exciting phase, offering new opportunities to address imbalanced immune responses. The primary categories of treatment include biologics and small molecules. Currently, the only three approved biologics for HS are the anti-TNF-α antibody adalimumab, the anti-IL-17A secukinumab and the anti-IL-17A/17F, bimekizumab. While studies indicate moderate effectiveness of all three drugs, achieving adequate disease control remains challenging for many patients. Research in the field of HS is rapidly evolving, with a wide range of treatments being developed that leverage various mechanisms of action. Drugs targeting the IL-17 and Janus kinase/signal transducer and activator of transcription (JAK/STAT) pathways show promise in ongoing and completed phase 3 studies, offering the potential for more comprehensive treatment responses.

The treatment of HS is multimodal, even though it begins with a dermatologic examination and therapy prescribed by the dermatologist. A multidisciplinary approach is necessary to achieve the best results and to optimize the treatment. Surgical treatment must be individualized according to the degree of the disease. Adequate preoperative preparation of the patient and the wound is necessary. Surgical treatment alone does not give a 100% safe outcome, and remissions are possible regardless of the treatment method. We present current surgical treatment modalities available for HS treatment. The methods are divided into local and radical procedures. Recent advancements and findings are also discussed.

Hidradenitis suppurativa (HS) is a chronic skin disease whose impact on skin homeostasis has not been adequately studied at present. Knowledge about how skin function changes in these patients, and could be of interest not only to improve the topical management of the disease, but also as an objective measure of disease activity. The aim of this study was to compare skin homeostasis and the epidermal barrier function in lesional and healthy skin areas of patients with HS.

We conducted a cross-sectional study. Skin homeostasis and the epidermal barrier function of lesions were assessed in HS patients using validated tools. A healthy perilesional skin control was assigned to each lesion to compare skin homeostasis parameters.

A total of 43 patients were included: 22 nodules, 10 abscesses and 25 draining tunnels were measured. The male-to-female ratio was 20:23, and the mean age, 35.95 years (SD, 14.82). Increased transepidermal water loss (TEWL) and erythema were found in nodules, abscesses and draining tunnel vs healthy skin. A direct association was observed between inflammatory nodules TEWL and IHS4 stage. In draining tunnels, a direct association was observed between TEWL and smoking. A trend of increasing TEWL values was observed as a function of Hurley stage.

HS lesions exhibit epidermal barrier dysfunction that depends on the severity of inflammatory activity. These results could be useful to develop objective classification systems for the severity and degree of involvement of HS or help in the development of vehicles for specific drugs, antiseptics and dressings for the management of this disease.

This second part of the S2k guidelines is an update of the 2015 S1 European guidelines.

These guidelines aim to provide an accepted decision aid for the selection, implementation and assessment of appropriate and sufficient therapy for patients with hidradenitis suppurativa/acne inversa (HS).

The chapters have been selected after a Delphi procedure among the experts/authors. Certain passages have been adopted without changes from the previous version. Potential treatment complications are not included, being beyond the scope of these guidelines.

Since the S1 guidelines publication, validation of new therapeutic approaches has almost completely overhauled the knowledge in the field of HS treatment. Inflammatory nodules/abscesses/draining tunnels are the primary lesions, which enable the classification of the disease severity by new validated tools. In relation to the degree of detectable inflammation, HS is classified into the inflammatory and the predominantly non-inflammatory forms. While the intensity of the inflammatory form can be subdivided by the IHS4 classification in mild, moderate and severe HS and is treated by medication accordingly, the decision on surgical treatment of the predominantly non-inflammatory form is based on the Hurley stage of the affected localization. The effectiveness of oral tetracyclines as an alternative to the oral combination of clindamycin/rifampicin should be noted. The duration of systemic antibiotic therapy can be shortened by a 5-day intravenous clindamycin treatment. Adalimumab, secukinumab and bimekizumab subcutaneous administration has been approved by the EMA for the treatment of moderate-to-severe HS. Various surgical procedures are available for the predominantly non-inflammatory form of the disease. The combination of a medical therapy to reduce inflammation with a surgical procedure to remove irreversible tissue damage is currently considered a holistic therapeutic approach.

Suitable therapeutic options while considering HS severity in the therapeutic algorithm according to standardized criteria are aimed at ensuring a proper therapy.

Hidradenitis suppurativa (HS) is a chronic skin disease whose impact on skin homeostasis has not been adequately studied at present. Knowledge about how skin function changes in these patients, and could be of interest not only to improve the topical management of the disease, but also as an objective measure of disease activity. The aim of this study was to compare skin homeostasis and the epidermal barrier function in lesional and healthy skin areas of patients with HS.

We conducted a cross-sectional study. Skin homeostasis and the epidermal barrier function of lesions were assessed in HS patients using validated tools. A healthy perilesional skin control was assigned to each lesion to compare skin homeostasis parameters.

A total of 43 patients were included: 22 nodules, 10 abscesses and 25 draining tunnels were measured. The male-to-female ratio was 20:23, and the mean age, 35.95 years (SD, 14.82). Increased transepidermal water loss (TEWL) and erythema were found in nodules, abscesses and draining tunnel vs healthy skin. A direct association was observed between inflammatory nodules TEWL and IHS4 stage. In draining tunnels, a direct association was observed between TEWL and smoking. A trend of increasing TEWL values was observed as a function of Hurley stage.

HS lesions exhibit epidermal barrier dysfunction that depends on the severity of inflammatory activity. These results could be useful to develop objective classification systems for the severity and degree of involvement of HS or help in the development of vehicles for specific drugs, antiseptics and dressings for the management of this disease.

Background: Hidradenitis suppurativa (HS) is a rare, debilitating, chronic inflammatory skin disease. This study aimed to investigate differences in body composition between patients with hidradenitis suppurativa (HS) and healthy controls, with a particular focus on sex-specific disparities, while also exploring secondary associations with muscle health and quality of life. Methods: Body composition was measured using a bioanalyzer and compared between HS individuals (n = 53) and controls (n = 50). Results: The mean BMI was significantly higher in the HS group than in the controls (median 29.6 vs. median 22.1; p < 0.001, effect size -0.581). The patients with HS had a significantly higher fat mass (mean 26.2 ± 22.7 vs. 16.3 ± 6.0; p < 0.001, effect size -0.400), level of visceral fat (median 9 vs. 2; p < 0.001, effect size -0.473), percentage of total body water (mean 45.9 ± 12.3 vs. 31.9 ± 14.3; p < 0.001, effect size -0.508), skeletal muscle index (median 8.9 vs. 7.3; p < 0.001, effect size -0.445), and bone mass (median 3.2 vs. 2.5; p < 0.001, effect size -0.421); at the same time, they had a significantly lower predicted muscle mass (median 19.8 vs. 47.3; p < 0.001, effect size -0.740) and percentage of skeletal muscle mass (mean 38.2 ± 7.8 vs. 42.3 ± 5.5; p = 0.008, effect size -0.263) in comparison to the controls. The HS group was also characterized by a higher metabolic age (median 65 vs. 21 years; p < 0.001, effect size -0.760) and basal metabolic rate (median 1927 vs. 1489 kcal; p < 0.001, effect size -0.444). Conclusions: Patients with HS exhibit a distinctive pattern in body composition parameters when compared to healthy controls, which may hold significant potential for enhancing diagnostic accuracy and monitoring disease progression. This study highlighted sex-specific differences in body composition, emphasizing the need to consider biological sex in the pathophysiology and clinical evaluation of HS. Further research is needed to explore the clinical utility of body composition analysis in disease progression, therapeutic response, and personalized management.

Hidradenitis suppurativa (HS) is a chronic inflammatory skin condition, primarily affecting young individuals, with a significant impact on their quality of life due to recurrent, painful nodules, abscesses, and oozing sinus tracts, primarily affecting intertriginous areas. The pathogenesis of HS is multifactorial, involving a complex interplay between genetic predisposition, immune dysregulation, microbial, and environmental factors. While it is known that cutaneous and gut microbiome contribute to innate immune dysregulation in HS, their precise involvement in disease pathogenesis remains unclear. Despite several studies investigating the microbiome of HS lesions, either by culture-dependent or independent methods, there is no data available on the interplay between bacterial virulence profiles, clinical manifestations, and the host immune response. This study aimed to explore the phenotypic and genotypic resistance and virulence profiles of microorganisms isolated from HS lesions (including the expression of soluble virulence factors and the ability to develop biofilms), with a special focus on Staphylococcus aureus (S. aureus), one of the most frequent infectious agents of HS. A total of 92 bacterial strains, belonging to 20 different bacterial species, were isolated from the HS lesions of 23 patients. The strains of Staphylococcus, Corynebacterium, and Enterococcus expressed the highest levels of soluble virulence factors, such as hemolysins, lecithinase, and lipase, which are involved in bacterial persistence, local invasivity, and tissue damage. Moreover, a significant variation among bacterial species was noted regarding the capacity to develop biofilms, with a potential impact on disease chronicization, bacterial tolerance to antibiotics, and immune defense mechanisms. The genetic characterization of methicillin-resistant staphylococci revealed the presence of adhesins, hemolysin and enterotoxin genes as well as methicillin and macrolides resistance genes. Our findings highlight the critical role of virulence determinants, including bacterial biofilms, in HS pathogenesis, emphasizing the need for targeted therapeutic strategies to disrupt biofilms and mitigate infection severity.

Hidradenitis suppurativa is a chronic inflammatory skin condition characterized by painful nodules, abscesses, and sinus tracts that may lead to irreversible scarring complications. Therapeutic options include antibiotics, biologic therapies, and surgical procedures. Current management of hidradenitis suppurativa favors early surgical intervention along with medical therapy to promote healing and minimize scars and complications in a disease characterized by a therapeutic window of opportunity. Surgical techniques range from incision and drainage to wide excision, with varying recurrence rates mainly based on the extent of procedures. Reconstruction techniques would vary primarily based on the extent of the defect and the area involved. In all cases, a good preoperative planning and delimitation with imaging modalities, preferably intra- or perioperative facilitates complete removal of involved tissue, preserving the integrity and function of healthy skin and minimizing recurrences.

Hidradenitis suppurativa (HS) is a chronic inflammatory skin condition that may cause debilitating pain and itch. Given their physical and psychological burden, recognition and treatment of HS-associated symptoms are critical for supporting patients with HS. The complex nature of HS pain, encompassing acute and chronic timing as well as nociceptive, neuropathic, and nociplastic character, requires a tailored treatment approach. Itch in HS, although less studied, is also a prevalent and distressing symptom. The aim of this narrative review is to apply current knowledge of HS pain and pruritus to develop a practical approach for symptomatic management in the dermatology office.

Hidradenitis suppurativa (HS) is a chronic skin condition with a significant impact on patient quality of life, highlighting the need for innovative therapeutic approaches. HS is characterized by its chronicity; it presents in the form of painful nodules, abscesses, and sinus tracts or fistulas, typically localized in intertriginous areas, emerging in early adulthood and in predominantly the female population.

In this review, the authors discuss the preclinical discovery and development of secukinumab for HS, highlighting target identification, validation, and compound selection. Methodologies such as high-content screening, chemoinformatics, and animal models that validate the IL-17 pathway's role in HS are explored. The transition from preclinical to clinical development, including pharmacokinetics (PK), pharmacodynamics (PD), and ADME-Tox studies, is elaborated. The literature search was conducted using PubMed, Web of Science, Scopus, UpToDate, Cochrane Library, Embase, and Google Scholar, covering relevant studies published up to December 2024.

The integration of secukinumab into HS treatment highlights the critical role of targeting the IL-17A pathway. Although efficacious and safe in trials, understanding secukinumab's long-term effects and optimal treatment placement remains challenging. Future research should prioritize the development of tailored therapeutic strategies that align with individual disease phenotypes and immune profiles to enhance treatment outcomes in HS management.

The SUNSHINE and SUNRISE phase III trials demonstrated sustained clinical efficacy of secukinumab in patients with moderate-to-severe hidradenitis suppurativa (HS) through 52 weeks. Patients completing the core trials could enter a 4-year extension trial.

To evaluate the long-term efficacy, safety/tolerability and maintenance of clinical response to secukinumab through week 104 in the extension trial.

Patients with a hidradenitis suppurativa (HS) clinical response (HiSCR) at week 52 of the core trials (extension trial baseline visit) entered a randomized withdrawal period. HiSCR responders receiving subcutaneous secukinumab 300 mg every 2 or 4 weeks (SECQ2W/SECQ4W) through week 52 in the core trials were randomized 2 : 1 to continue secukinumab (SECQ2W-R-Q2W or SECQ4W-R-Q4W) or receive placebo (SECQ2W-R-PBO or SECQ4W-R-PBO) through week 104. The primary endpoint was time to loss of response (LOR; newly defined for this trial) through week 104 in week 52 HiSCR responders (SECQ2W-R-Q2W vs. SECQ2W-R-PBO and SECQ4W-R-Q4W vs. SECQ4W-R-PBO). Time to LOR was tested at 1.25% (one-sided) for each comparison (one-sided familywise alpha of 2.5%) through week 104. If LOR was met, patients could remain in the trial on open-label secukinumab treatment. Additional endpoints included safety and HiSCR. The trial was registered with ClinicalTrials.gov (NCT04179175).

Overall, 84.3% of patients who completed the core trials entered the extension trial; 55.9% were week 52 HiSCR responders. The primary endpoint was not met for either secukinumab dosing regimen. The estimated risk reduction for LOR was 13% (SECQ2W-R-Q2W vs. SECQ2W-R-PBO; one-sided P = 0.25) and 30% (SECQ4W-R-Q4W vs. SECQ4W-R-PBO; one-sided P = 0.04). The median time to LOR was numerically longer in the secukinumab arms vs. placebo {SECQ2W-R-Q2W [283 days; 95% confidence interval (CI) 176, -] vs. SECQ2W-R-PBO [239 days; 95% CI 120, -]; SECQ4W-R-Q4W [365 days 95% CI 225, -] vs. SECQ4W-R-PBO [171 days; 95% CI 113-337]}. In week 52 HiSCR responders reporting LOR, 44% (SECQ2W-R-Q2W), 58% (SECQ2W-R-PBO), 40% (SECQ4W-R-Q4W) and 34% (SECQ4W-R-PBO) were achieving HiSCR at the time of LOR. Overall, the safety of secukinumab was consistent with the core trials.

The primary endpoint of this trial was not met. HiSCR was maintained in many patients at the time of LOR. The safety of secukinumab was consistent with the previously characterized safety profile in the core trials.

Background Hidradenitis suppurativa (HS) is a chronic inflammatory skin disorder characterised by recurrent painful nodules, abscesses, and sinus tract formation in intertriginous areas. Accurate staging of this disorder is crucial for appropriate management and prognosis. The role of imaging in the staging of HS is still evolving. Objectives To assess the correlation between clinical disease severity staging and high-resolution ultrasonography and colour doppler (HRUS-CD) staging in HS patients. Methods This was a cross-sectional, single-centre study in patients above 18 years of age with the clinical diagnosis of HS. All patients underwent clinical examination and high-resolution ultrasonography and colour doppler study with high-frequency linear probe (L+ 8-24 MHz). Correlations between clinical Hurley staging and the various ultrasonographic parameters i.e. SOS-HS (sonographic staging of severity of HS), degree of vascularisation, fibrotic scarring and oedema were explored and analysed. Spearman's correlation coefficient was applied to study the correlations and p<0.05 was considered significant. Results A total of 46 patients with HS who met the inclusion criteria were included. The majority of patients were clinically in Hurley stages 1 (32.6%; n=15) and 2 (56.5%; n=26) (41 in all). However, on the basis of ultrasonographic findings, significant numbers of patients had greater severity of staging on SOS-HS (58.5%; n=24/41), higher vascularity on colour doppler (26.8%; n=11), more severe grading of fibrous scarring (43.9%; n=18) and oedema (68.2%; n=28) in comparison to the clinical Hurley staging. Limitations Limitations of our study include a small sample size and cross-sectional design. Conclusion The results of the study indicate that the majority of the patients were under-staged and under-treated clinically, hence emphasising the role of high-resolution ultrasonography and colour doppler study in the accurate determination of HS severity. Future research should focus on standardised protocols and larger, prospective studies to establish the role of these imaging modalities in routine clinical practice.

Hidradenitis Suppurativa is a burdensome inflammatory skin disease with significant quality of life impact. These management guidelines were developed to direct appropriate clinical management in the Australasian context. A systematic review was used for the basis of the consensus guidelines. Thirteen clinical experts were involved in a modified Delphi consensus process to develop the guidelines and treatment algorithms. Overall management strategies include appropriate severity assessment of disease and comorbidities, multimodal therapy with systemic and local treatments, and evidence-based progression along the therapeutic ladder in the event of inadequate response. Sequential monotherapy with antibiotics and/or single agent therapy is discouraged and aggressive treatment of moderate to severe disease to capture the window of opportunity is highly emphasised. Specific considerations in the setting of disease comorbidities, pregnancy and breastfeeding are also addressed. Overall, the complex nature of HS requires a complex and multimodal therapeutic response with medical, physical and surgical therapies to achieve best patient outcomes.

Therapeutic burden (TB) has been identified as a potential predictor of response to biologic therapy in hidradenitis suppurativa (HS). We aim to analyze the determinants of TB in real-world clinical settings among HS patients to explain this concept and its utility as an additional tool for guiding therapeutic decision-making.

We conducted a cross-sectional study including all consecutive HS patients attending a specialized HS clinic between 2017 and 2024. The primary variable was TB, defined as the cumulative sum of prior systemic treatment cycles and surgical interventions for HS. We analyzed whether sociodemographic or clinical factors were associated with a higher TB.

We included 557 HS patients. Of these, 50.81% were women, and the mean age was 41.87 (14.19) years. Most patients (62.30%) were referred from general dermatology consultations. The mean disease duration was 17.52 (11.51) years. Regarding disease severity, 46.50% presented with Hurley II, and 42.19% had an IHS-4 score between 4 and 10. Before their baseline visit, 9.70% of patients had received biological therapy, mostly adalimumab (88.89%). The mean TB was 2.42 (2.25) systemic medical and/or surgical interventions. Referral from general dermatology or other hospital departments, older age, longer disease duration, greater HS severity, presence of pilonidal sinus, and prior biological therapy were significantly associated with higher TB.

Our findings suggest that TB comprehensively captures HS severity and progression factors. This metric could prove valuable in aiding decision-making for HS patients by indicating when a change in therapy might be necessary.

Hidradenitis suppurativa (HS) is a chronic inflammatory disease characterised by an aberrant activation of innate immunity and increased production of pro-inflammatory mediators such as interleukin 17 (IL-17). IL-17 has been shown to play a key role in the pathogenesis of HS and evidence highlights the potential of IL-17-targeted therapies. The fully human IgG/κ monoclonal antibody secukinumab, which specifically targets IL-17A and inhibits interaction with its receptor, has recently been approved for the treatment of moderate-to-severe HS. Secukinumab offers patients an efficacious and well-tolerated treatment option in terms of sustained response by rapidly improving signs and symptoms, and preventing disease progression in the absence of loss of response. Being a challenging disease, HS is associated with a delay to diagnosis of 3-10 years and, consequently, late implementation of appropriate treatment, leading to disease progression. Misdiagnosis due to flawed understanding and lack of awareness among medical providers and patients is considered an important factor contributing to the delayed diagnosis. Thus, serious efforts must be made on a large scale to urgently reduce the delay in HS diagnosis and reduce the disease burden in patients, including raising awareness, implementation of education programmes at medical and specialisation schools, as well as continuous education of healthcare providers at different levels for the early detection of HS and initiation of appropriate treatment. Here, we present the main critical unmet needs in the diagnosis and treatment of patients affected by HS, address how disease awareness and comprehensive multidisciplinary management (offering both medical and surgical care) can benefit patients, and suggest therapeutic options, based on clinical characterisation and early identification and intervention (window of opportunity), to be adopted for a timely and better management of disease progression and to fill current gaps.

Hidradenitis suppurativa (HS) is a complex, chronic skin disease characterised by painful inflammatory nodules, abscesses, dermal tunnels, sinus tracts and fistulae with a predilection for intertriginous skin. HS carries a substantial disease burden due to its prevalence, associated comorbidities and quality of life impacts and is associated with high healthcare resource utilisation. Clarity regarding the prevalence and pathogenesis of HS has led to improved therapies and more patients seeking care in both outpatient and acute care settings, including the emergency department. Emergency medicine providers play a critical role in HS diagnosis, management of acute flares and connection of HS patients with long-term dermatologic care, which can in turn help manage utilisation of acute care resources.

Hidradenitis suppurativa is a chronic inflammatory skin condition characterized by painful nodules, abscesses, and sinus tracts that may lead to irreversible scarring complications. Therapeutic options include antibiotics, biologic therapies, and surgical procedures. Current management of hidradenitis suppurativa favors early surgical intervention along with medical therapy to promote healing and minimize scars and complications in a disease characterized by a therapeutic window of opportunity. Surgical techniques range from incision and drainage to wide excision, with varying recurrence rates mainly based on the extent of procedures. Reconstruction techniques would vary primarily based on the extent of the defect and the area involved. In all cases, a good preoperative planning and delimitation with imaging modalities, preferably intra- or perioperative facilitates complete removal of involved tissue, preserving the integrity and function of healthy skin and minimizing recurrences.

Hidradenitis suppurativa (HS) is a chronic, inflammatory, neutrophilic skin disease associated with a considerable clinical burden. In more severe disease, subepidermal draining tunnels may form.

To characterize the clinical profile of patients with moderate-severe HS with and without draining tunnels, and the clinical and health-related quality of life (HR-QoL) burden of draining tunnels.

Data were drawn from the Adelphi HS Disease Specific Programme™, a cross-sectional survey with retrospective data collection, across the United States, France, Germany, Italy, Spain and the United Kingdom between November 2020 and April 2021. Patients were aged ≥10 years and had HS. Clinical outcomes, recorded by physicians, comprised patient demographics and HS characteristics, symptoms and treatment. HR-QoL measures included patient and physician survey questions, and validated HR-QoL instruments.

Of the 580 patients with moderate-severe HS, 46% had draining tunnels. Patients with draining tunnels had more abscesses, inflammatory nodules and scarring than those without. Patients with draining tunnels were significantly (p < 0.05) more likely to be treated with biologics (41% vs. 27%), but often patients with tunnels who were eligible for biologics had not received them. Patients with draining tunnels experienced significantly more inflammation/redness (73% vs. 63%), drainage from lesions (62% vs. 40%) and pain on sitting (48% vs. 37%) than those without (p < 0.05). Draining tunnels were also significantly associated with low mood/depression (30% vs. 18%), sleep disturbance (28% vs. 19%) and fatigue (28% vs. 18%) versus no tunnels (p < 0.05). Physicians agreed that patients with draining tunnels experienced a negative impact of disease compared to those without. This was reflected in patient-reported surveys and HR-QoL instruments.

Patients with moderate-severe HS and draining tunnels experience greater clinical and HR-QoL burden than those without, emphasizing the importance of tunnels in disease impact.

The combination of adalimumab and surgical interventions plays a crucial role in managing severe hidradenitis suppurativa (HS). However, there is still limited scientific evidence regarding administering adalimumab during the perioperative period. This study aimed to evaluate whether adalimumab could adversely affect postoperative complications and the total time of wound closure (TTWC) in patients undergoing cutaneous surgery for HS.

In this single-centre cohort study, patients with HS were allocated to two groups. Group 1 (biological cohort) consisted of patients with HS who had continuously received adalimumab for at least three months before the procedure. Group 2 (non-biological cohort) patients underwent cutaneous surgery after only four weeks of anti-inflammatory medication. All patients were left to secondary wound healing.

A total of 30 surgical sites in 20 patients were included in the study (Group 1: 15 surgical sites/nine patients; Group 2: 15 surgical sites/11 patients). Disease severity and excised skin areas were significantly higher in Group 1 (p<0.001 and p=0.042, respectively) than in Group 2. While the median TTWC was longer in Group 1 than in Group 2 (p=0.004), multivariate regression analysis showed that TTWC was associated with the excised skin area (p=0.016) and Hurley stage (p=0.032), but was not affected by the use of adalimumab (p=0.076).

In this study, the use of adalimumab around surgery was not associated with an increased risk of postoperative complications or a prolonged course of wound closure. The results in this patient cohort suggest that adalimumab should not be discontinued during the perioperative period of HS surgery.

Hidradenitis suppurativa (HS), or acne inversa, is a chronic inflammatory skin condition primarily affecting skin folds such as the axilla, groins, and the inframammary, perineal, and perianal regions. It is characterized by painful abscesses, sinus tracts, and scarring. Predominantly affecting young adults, particularly females, HS often emerges during reproductive age, and flares are widely reported during pregnancy and postpartum, underscoring the need to consider management strategies tailored to pregnant or lactating individuals. Moreover, the chronic and relapsing nature of HS, along with challenges related to the safety and compliance of medication use during pregnancy and lactation, as well as various comorbidities and psychological distress, significantly complicate its management in pregnant or lactating women. Treatment options, including topical clindamycin, oral clindamycin-rifampicin, adalimumab, metformin, antiseptic washes, and certolizumab pegol, have accumulated evidence supporting their relative safety in pregnant and lactating women. While certolizumab pegol has shown promising safety data among biologics, it requires more efficacy data in HS. Conversely, while newly approved HS medications such as secukinumab and bimekizumab show promise for the general population, further research is necessary to evaluate their safety profiles in pregnant and breastfeeding individuals. The scant research available on HS in pregnant and lactating women, also shown by our systematic literature review, highlights the need for a comprehensive investigation into the safety, efficacy, and suitability of management strategies.

Hidradenitis suppurativa (HS) is a chronic inflammatory skin condition that affects about 1% of the world's population. It is characterized by round, painful nodules, abscesses or sinuses, often in the genital area. HS has the worst impact on quality of life (QoL) of any dermatological condition. Methods: The aim of this systematic review is to analyze how HS affects patients' sexual quality of life (SQoL), herein defined as a person's evaluation of their sexual relationships, including physical and mental aspects, and their response to this evaluation. Results: The systematic search yielded 41 primary results. After screening, 6 studies were selected for this review. Men with HS suffer from lower SQoL than male controls and sexual dysfunction is more common in both male and female patients than in controls. Sexual dysfunction is worse in all HS patients than in controls, and worse in female patients than in male patients. Disease severity is not related to any of the sexual concepts analysed. Conclusions: HS has a strong impact on SQoL, as patients suffer from sexual dysfunction and sexual distress more often than healthy controls, and feel that their relationships are negatively affected by the disease. Therefore, the impact of HS on SQoL should be further investigated, especially the psychological aspect of SQoL.

Hidradenitis suppurativa is a chronic inflammatory disease of the skin with a suppurative-cicatricial outcome affecting the infundibular component of the pilo-sebaceous unit. The lesions are typically localized in the intertriginous and apocrine gland-rich areas. Hidradenitis suppurativa mainly affects patients at a young age and is very often refractory to conventional medical treatment. During pregnancy, the management of hidradenitis suppurativa becomes demanding due to the need of safety therapies. Certolizumab pegol is a pegylated monoclonal TNF-α inhibitor that lacks the fragment crystallizable region preventing active placental transfer and could be used in pregnancy and lactation if clinically needed and is label for chronic plaque psoriasis, rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis, Crohn's disease. Herein, we describe a case of a 32-year-old pregnant woman with Hurley stage III hidradenitis suppurativa successfully treated with certolizumab pegol.

Hidradenitis suppurativa (HS) is a chronic inflammatory disease affecting apocrine gland areas, characterized by painful nodules and abscesses that may result in sinus tracts and scarring. The global prevalence of HS is increasing due to heightened awareness, improved diagnostic methods, rising obesity rates, and higher smoking prevalence. This study aimed to describe the epidemiological, clinical, and comorbid characteristics of HS patients.

This retrospective descriptive cross-sectional study included 193 outpatients aged between 15 and 73 years who visited a tertiary HS clinic between 2017 and 2022. Demographic, clinical, and comorbid characteristics were recorded and analyzed using chi-square and ordinal regression methods.

The mean age was 34.5 ± 12.1 years, with a mean disease duration of 5.9 ± 6.7 years. According to the Hurley classification, 61.1, 24.4, and 14.5% were stages I, II, and III, respectively. Comorbidities were present in 48.2% of patients, with psychiatric disorders (19.2%), diabetes mellitus (14%), and hypertension (9.3%) being most common. Disease duration, smoking, male gender, and atypical localization were associated with increased disease severity.

Geographic and cultural factors influence the prevalence, severity, and management of HS, necessitating tailored treatment. Effective management requires multidisciplinary screening for early detection and prevention of comorbidities, including psychiatric disorders, cardiovascular conditions, and metabolic syndrome.

Hidradenitis suppurativa (HS) is a chronic inflammatory skin disease that presents as painful, deep-seated nodules, sinus tracts, and abscesses in about 1% of the population. Although the pathogenesis of HS is not perfectly understood, it is generally recognized to be caused by a combination of genetic, endocrine, environmental, and microbiological factors. The treatment principles of HS focus on decreasing the microbial load with antibiotics and/or modulating the host immune response to reduce inflammation. The treatment of adults with moderate-to-severe HS has significantly changed recently with the development of new biological medications and immunomodulators. While previously the mainstay of treatment of moderate-to-severe HS was adalimumab, a biologic tumour necrosis factor α inhibitor, the evidence for the use of other treatment classes such as interleukin (IL)-17 inhibitors, IL-1 inhibitors, and Janus kinase inhibitors has been growing. The goal of this review article is to review the available evidence that supports the efficacy and safety of biologics and small molecule immunomodulator treatments to treat adults with moderate-to-severe HS.

Hidradenitis suppurativa (HS) is a chronic inflammatory skin disease characterized by the formation of nodules, abscesses, and fistulae at intertriginous sites. Pain, pruritus, malodor, and suppuration have a significant impact on quality of life for HS patients. Prevalence figures vary greatly in the literature from 0.05% to 4.1%, and HS is more common in females. The current understanding of the etiology and pathogenesis of HS is incomplete; numerous hypotheses concern the interplay of lifestyle factors, skin microbiota, genetics, and a dysregulated immune system. Due to its phenotypic heterogeneity and multifactorial pathogenesis, HS is a complex disease that can prove challenging to manage. Two approved biologic therapies for the management of HS have led to clinical response in approximately 50% of treated patients. New therapies targeting the interleukin (IL)-1, IL-17, IL-36, and Janus kinase/signal transducer and activator of transcription (JAK/STAT) pathways are in ongoing clinical trials, and preliminary data offer hope for greater clinical efficacy in HS in the future.

Survival analyses can provide valuable insights into effectiveness and safety as perceived by prescribers. Here, we aimed to evaluate adalimumab (ADA) survival and the interruption risk factors in a multicentre cohort of patients with hidradenitis suppurativa (HS). Moreover, we performed a subanalysis considering the periods before and after the onset of the COVID-19 pandemic.

We conducted a retrospective study including 539 adult patients with HS who received ADA from 1 May 2015 to 31 December 2022. Overall drug survival was analysed using Kaplan-Meier survival curves and compared between the subgroups via stratified log-rank test. Possible predictors for overall drug survival and reasons for discontinuation were assessed using univariate and multivariate Cox regression.

Overall, 50.1% were females with a mean age of 43.5 ± 1 years and a mean BMI of 29.5 ± 6.7. At the start of ADA, 95.29% were biologic-naïve and 24.63% had undergone surgical treatment. During follow-up, 9.46% of patients required dose escalation, while 39.92% interrupted ADA. Concomitant therapy was used in 64.89% of cases. A subanalyses comparing pre- and post-pandemic periods revealed a tendency to initiate ADA treatment at a younger age, among patient with higher BMI and at a lower HS stage after COVID-19 pandemic. Interestingly, ADA demonstrated extended survival compared to previous studies, with a median overall drug survival of 56.2 months (95% CI 51.2 to 80.3). The primary causes for discontinuation were inefficacy (51.69%), followed by adverse effects (21.35%). Female sex, longer delay in HS diagnosis, higher baseline IHS4 score and concomitant spondyloarthritis were associated with poorer ADA survival or increased risk of discontinuation.

ADA demonstrated prolonged survival (median 56.2 months). While addition of antibiotics did not have a positive effect on survival rate, basal IHS4 proved useful in predicting ADA survival.

Hidradenitis suppurativa (HS), a chronic inflammatory skin disease affecting intertriginous areas, presents a recurring and debilitating challenge. Even though recent efforts have been made to estimate the overall HS prevalence, variations in screening modalities and missing data from the Global South warrant further investigation. Understanding the HS prevalence is crucial for treatment approaches and pathogenesis. Thus, we aimed to estimate a global HS prevalence based on studies using homogeneous validated questions.

This systematic review was prospectively registered on PROSPERO and adhered to Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines. Searches in PubMed, Embase, and CINAHL were performed on August 9, 2023. Original reports assessing the HS prevalence in adults using the following two questions were included: "Do you have recurrent boils of the skin?" and "Have you for the past 6 months had 2 or more boils/abscesses in any of the below locations: in the axilla, in the groin, around your genitals, on the buttocks, several locations i.e., first the buttocks then the axilla, etc.?" A pooled prevalence with 95% confidence interval (CI) was calculated with a random-effects model.

Eight studies qualified for inclusion, of which the prevalence estimate ranged from 0.7% to 6.4%. The meta-analysis encompassing 49,971 participants revealed a global HS prevalence of 2.5% (95% CI, 1.8-3.5%).

This meta-analysis suggests a global HS prevalence of 2.5% using a validated questionnaire. Due to heterogeneity and sparse data from the Global South, this estimate should be interpreted with caution.

Purpose: There is limited information about the diagnosis and treatment of hidradenitis suppurativa (HS) in the Kingdom of Saudi Arabia (KSA). This Delphi consensus study was conducted to develop recommendations for the management of HS in the KSA.Methods: The expert panel including 12 dermatologists with extensive experience treating HS patients provided nine consensus statements and recommendations on diagnosis and assessment, management, comorbidities and multidisciplinary approach, and education. The experts also developed clinical questions pertaining to the management of HS and rolled out as a survey to 119 dermatologists practising in the KSA.Results: The topics covered included: referring physicians' awareness of HS; referral criteria for HS; definition of moderate-to-severe HS; treatment goals; definition of treatment success; treatment and biologic initiation; comorbidities and multidisciplinary approach; patient education and awareness of HS. Full consensus (100%) from the expert dermatologists was received on all the topics except referring physicians' awareness of HS, definition of treatment success, and treatment and biologic initiation. The survey results resonated with the expert opinion.Conclusion: As HS is a chronic disease with negative impact on quality-of-life, timely diagnosis and treatment, early identification of comorbid conditions and a multidisciplinary care approach are crucial for effective management of HS.

Hidradenitis suppurativa (HS) is an inflammatory skin disease associated with high morbidity and disability that has limited treatment options. People from racial and ethnic minority groups may experience greater disease severity and delay to diagnosis. This study assessed the impact of race/ethnicity on HS diagnosis and management in real-world clinical settings. Data were derived from the Adelphi Real World Hidradenitis Suppurativa Disease Specific Programme, a survey of dermatologists and their consulting HS patients in five European countries and the USA in 2020/2021. Dermatologists returned demographic and clinical data, and treatment goals and satisfaction for their next five to seven consulting patients. Patients completed a questionnaire on disease history and diagnosis, disease burden, and treatment satisfaction. Groups were compared with bivariate tests. In total, 312 physicians returned data on 1787 patients; 57.6% were female and 77.7% White. People from racial and ethnic minority groups were younger than White patients (32.9 ± 11.6 vs. 34.9 ± 12.4, mean ± standard deviation) and reported symptoms at a younger age (23.3 ± 10.8 vs. 26.2 ± 11.1), but their time to first consultation was longer than for White patients (2.6 ± 5.7 vs. 1.2 ± 2.5 years). People from racial and ethnic minority groups took longer to receive a correct diagnosis following first consultation (2.7 ± 5.3 vs. 1.5 ± 4.1 years) and were more likely to be misdiagnosed with boils (73.5% vs. 40.4%). People from racial and ethnic minority groups had a greater disease awareness at diagnosis and reported wanting greater support. People from racial and ethnic minority groups reported a greater impact on life, more severe pain, and a greater level of activity impairment in the Work Productivity and Activity Impairment: General Health (27.0 ± 25.2 vs. 20.0 ± 20.6). All P values were ≤0.05. These data show evidence of delayed diagnosis and higher HS symptom burden amongst people from racial and ethnic minority groups, highlighting health disparities in HS.

Pain is the most impactful symptom in hidradenitis suppurativa (HS), contributing to physical limitations, worsened mental health, and impaired social relationships. Some HS-directed therapies ameliorate HS pain; however, these medications provide insufficient relief for many people living with HS. This article reviews what is currently known about HS pain phenotypes and pathophysiology, the effectiveness of HS treatments for pain, and practical suggestions for dermatologists to help patients manage the symptoms of acute and chronic HS pain.

Hidradenitis suppurativa (HS) is a chronic inflammatory follicular disease characterized by painful, recurrent, inflamed lesions most commonly occurring in the axillary, inguinal, and anogenital regions. HS can inflict immense physical and psychological impact on patients who suffer from this distressing disease. Management of HS generally requires combining various medical and procedural treatment modalities; however, the disease is often recalcitrant to conventional treatments. In light of recent evidence supporting the effectiveness of biologic agents in the treatment of HS, the Taiwanese Dermatological Association established an expert panel of nine dermatologists to develop consensus statements aimed to provide up-to-date evidence-based guidance in optimizing HS patient management in Taiwan. The recommendations described in the statements were summarized in a management algorithm in terms of general care, topical treatment, systemic treatment, and procedural treatment.

Patients with hidradenitis suppurativa (HS) experience significantly delayed diagnoses of 7-10 years from symptom onset on average, but the reasons for this remain largely unknown. This study investigated drivers of diagnostic delay from the perspective of healthcare system equity.

A literature review was performed to identify published factors associated with delayed HS diagnosis to inform data analysis. Clinical and demographic data from the Adelphi HS Disease Specific Programme (DSP)™, a real-world cross-sectional survey of dermatologists and their consulting patients in France, Germany, Italy, Spain, the UK and the USA in 2020/2021, were used to model factors influencing delay to diagnosis from onset of symptoms and first consultation.

Factors influencing delay to HS diagnosis in the literature with the most available evidence were misdiagnosis, delay in specialist referral and patient embarrassment. Data analysis revealed that increasing age was associated with reduced diagnostic delay after symptom onset. Patients with HS who were White or in Germany were also more likely to receive a faster diagnosis. Smokers, patients with concomitant conditions, or a family history of HS were slower to be diagnosed. When time to diagnosis following first consultation was assessed, increasing age was associated with quicker diagnosis. Moreover, patients with a family history of HS were diagnosed quicker, whereas those with high body mass index, more concomitant conditions, in employment, managed by multiple physicians or European were more delayed.

On the basis of a thorough analysis of real-world data, multiple factors that potentially influenced the timely diagnosis of HS have been identified. For the first time, this study quantifies the relative impact of these modifiers, providing valuable insights into areas that require attention for faster diagnoses and improved disease outcomes.

Hidradenitis suppurativa (HS) is a chronic inflammatory disorder primarily affecting the intertriginous and anogenital regions. Guidelines recommend various treatments for HS, including biologic agents like adalimumab for moderate to severe cases. Adalimumab is a type of human monoclonal IgG1 antibody designed to target tumor necrosis factor α. Recent studies have shown the effectiveness of adalimumab, either alone or combined with surgery, in managing HS. We retrospectively analyzed the medical chart of HS patients in a southern Taiwan medical center from 2019 to 2022 and investigated clinical features and treatment response. The institutional review board at Chang Gung Medical Foundation granted approval for the study. We primarily focused on moderate to severely affected patients. One hundred and two clinically diagnosed HS patients participated, with a male-to-female ratio of 2:1 and an average age of 31.8 at diagnosis. Among them, 41.2% were in Hurley stage III and 32.4% in stage II. Nineteen patients received excision with pre-surgical adalimumab; their average age at diagnosis was 31.1, with a gender ratio of 5.3:1. Surgery was most common on the buttocks (68%), axillae (21%), and groin (10%). Excision patients were primarily in advanced stages (Hurley III 94.7%, II 5.3%) with high body mass index. Adalimumab and surgery combined yielded a 68.4% improvement rate, while 15.8% remained stable and 15.8% did not respond as expected. In addition, smoking and obesity were prevalent among patients. Adalimumab showed promising results in moderate to severe HS, with significant improvement observed in our cases. The combination of adalimumab and surgery appeared effective in advanced HS patients with larger involved areas and more tunnels. No severe adverse events were reported. However, our study was limited by its retrospective nature and the lack of a control group. Despite these limitations, our study revealed the benefits of integrating adalimumab with suitable surgical procedures in managing patients experiencing moderate to severe HS in real-world scenarios.

Neutrophil-mediated inflammation is a key feature of immune-mediated chronic skin disorders, but the mechanistic understanding of neutrophil involvement in these conditions remains incomplete. Dapsone, colchicine, and tetracyclines are established drugs within the dermatologist's therapeutic armamentarium that are credited with potent anti-neutrophilic effects. Anti-neutrophilic drugs have established themselves as versatile agents in the treatment of a wide range of dermatological conditions. Some of these agents are approved for the management of specific dermatologic conditions, but most of their current uses are off-label and only supported by isolated reports or case series. Their anti-inflammatory and immunomodulatory properties make them particularly valuable in managing auto-immune bullous diseases, neutrophilic dermatoses, eosinophilic dermatoses, interface dermatitis, and granulomatous diseases that are the focus of this review. By inhibiting inflammatory pathways, reducing cytokine production, and modulating immune responses, they contribute significantly to the treatment and management of these complex skin conditions. Their use continues to evolve as our understanding of these diseases deepens, and they remain a cornerstone of dermatological therapy.