Depression: Definition, Epidemiology, Etiology, Symptoms, Diagnosis, Classification and Prognosis

This section contains information about the definition, epidemiology, etiology, symptoms, diagnosis, classification, and prognosis of depression. Depression is a psychiatric condition characterized by depressed or anhedonic mood for at least two weeks, as well as symptoms and loss of functionality in many areas. The concepts of "melancholia" and "black bile", which also include the symptoms [...]