Depressive disorders include Disruptive mood dysregulation disorder, Major depressive disorder (including major depressive episode), Persistent depressive disorder (dysthymia), Premenstrual dysphoric disorder, Substance/medication-induced depressive disorder, Depressive disorder due to another medical condition, Other specified depressive disorder, and Unspecified depressive disorder.
The common feature of all of these disorders is the presence of sad, empty, or irritable mood, accompanied by somatic and cognitive changes that significantly affect the individual’s capacity to function. What differs among them are issues of duration, timing, or presumed etiology.