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Five (or more) of the following symptoms have been present during the same 2-week period and represent a change from previous functioning; at least one of the symptoms is either (1) depressed mood or (2) loss of interest or pleasure.
Depressed, sad mood
Decreased interest/pleasure in activities
Significant weight loss/gain or decreased/increased appetite
Insomnia or hypersomnia
Psychomotor agitation or retardation
Fatigue
Feelings of worthlessness or excessive guilt
Decreased ability to think or concentrate, or indecisiveness
Recurrent thoughts of death, suicidal ideation with or without a plan or suicide attempt
The symptoms do not meet criteria for a mixed episode (manic and depressive symptoms together).
The symptoms cause clinically significant distress or impairment in social, occupational, or other important areas of functioning.
The symptoms are not due to the direct physiological effects of a substance. (e.g., a drug of abuse, a medication) or a general medical condition (e.g., hypothyroidism).
The symptoms are not better accounted for by bereavement, i.e., after the loss of a loved one.
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