How to find out If I have major depressive disorder?

Major depressive disorder is a mood disorder that interferes with daily life. Learn about symptoms, causes, and treatment. Major depressive disorder is a mood disorder that interferes with daily life. read more

Major depression. Major depression is much less common than mild or moderate depression and is characterized by severe, relentless symptoms. Left untreated, major depression typically lasts for about six months. Some people experience just a single depressive episode in their lifetime, but major depression can be a recurring disorder. read more