Depression Jim Katsoudas and Mary Shea According to the Diagnostic and Statistical Manual of Mental Disorders 5th edition (DSM-5), 8 different types of depression have been joined together under the diagnosis of Major Depressive Disorder. They are as follows: Disruptive Mood Dysregulation Disorder, Major Depressive Disorder, Persistent Depressive Disorder (Dysthymia), Premenstrual Dysphoric Disorder, Substance/ Medication [...]