Dysthymia

Dysthymia ( /dɪs.ˈθaɪ.miː.ə/), also known as neurotic depression, dysthymic disorder, and chronic depression, is a mood disorder consisting of chronic depression, with less severe but longer lasting symptoms than major depressive disorder. The concept was coined by Dr. Robert Spitzer (an editor of the American Psychiatric Association's Diagnostic and Statistical Manual of Mental Disorders (DSM-III)) as a replacement for the term "depressive personality" in the late 1970s.