Review
Copyright ©The Author(s) 2016.
World J Orthop. Nov 18, 2016; 7(11): 709-717
Published online Nov 18, 2016. doi: 10.5312/wjo.v7.i11.709
Table 1 Diagnostic criteria of major depressive disorder1
DSM-VDiagnostic Criteria
Major depressive disorderPatient reports at least five of nine of the following depressive symptoms most of the day or almost every day for at least two weeks: (1) Depressed mood that may be characterized by sadness, emptiness or hopelessness; (2) Markedly diminished interest or pleasure in all or almost all activities; (3) Significant unexpected weight loss; (4) Inability to sleep or oversleeping; (5) Psychomotor agitation or retardation; (6) Fatigue or loss of energy; (7) Feelings of worthlessness or inappropriate guilt; (8) Diminished ability to think, concentrate or make decisions; (9) Recurrent thoughts of death, suicidal ideation without a specific plan or a specific suicide attempt or specific plan for committing suicide
Symptoms cause clinically significant distress or impairment in social, occupational or other important areas of functioning
The episode is not due to the effects of substance or to a medical condition
The occurrence is not better explained by schizoaffective disorder, schizophrenia, schizophreniform disorder, delusional disorder, or other specified and unspecified schizophrenia spectrum and other psychotic disorders
There has never been a manic episode or a hypomanic episode
Table 2 Systemic effects of clinical depression on immune system and hypothalamic-pituitary-adrenal axis
Target systemEffect
Immunologic systemIncreased interleukin-1 Increased interleukin-6 Increased tumor necrosis factor-α
Musculoskeletal systemDecreased bone formation Increased bone resorption (likely 2/2 increased interleukin-1 and subsequent osteoclast activity)
Hypothalamic-pituitary-adrenal axisIncreased cortisol
Table 3 Patient Health Questionnaire 21
Over the past 2 wk, how often have you been bothered by any of the following problems?Not at allSeveral daysMore than half the daysNearly every day
Litter interest or pleasure in doing things02122232
Feeling down, depressed, or hopeless02122232
Table 4 Diagnostic criteria for major depressive disorder utilizing SIGECAPS mnemonic1
SleepInsomnia or hypersomnia nearly every day
InterestMarkedly diminished interest or pleasure in nearly all activities most of the time
GuiltExcessive or inappropriate feelings of guilt or worthlessness most of the time
EnergyLoss of energy or fatigue most of the time
ConcentrationDiminished ability to think or concentrate; indecisiveness most of the time
AppetiteIncrease or decrease in appetite
PsychomotorObserved psychomotor agitation/retardation
SuicideRecurrent thoughts of death/suicidal ideation