Depression is a mood disorder that causes a persistent feeling of sadness and loss of interest. The American Psychiatric Association’s Diagnostic Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) classifies the depressive disorders into:
Disruptive mood dysregulation disorder
Major depressive disorder
Persistent depressive disorder (dysthymia)
Premenstrual dysphoric disorder
Depressive disorder due to another medical condition
The common features of all the depressive disorders are sadness, emptiness, or irritable mood, accompanied by somatic and cognitive changes that significantly affect the individual’s capacity to function.
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