Only a doctor or qualified counselor can diagnose depression. If you or a loved one shows signs of depression,
talk to your doctor about your situation.
Bipolar disorder
A mood disorder that alters between clinical depression and strong feelings of hyperactivity and high mood.
Chronic depression
A long-term depressed mood, lasting two or more years.
Major depression
A depression that lasts for at least 2 weeks.
Postpartum depression
A major depression experienced by new mothers about within one month following birth that can be so severe it can endanger the child.
Psychotic depression
A depression that includes delusional thoughts, or a break from reality. Hallucinations and delusions are experienced.
Seasonal affective disorder (SAD)
A depression that occurs with change in seasons. Frequently begins in fall or winter and ends in early spring or summer. Seems
to be related to the amount of daylight available (depression increases when daylight amount decreases).
Substance-induced mood disorder
A depression that occurs when a person is taking a “downer” medication, intoxicated by a drug, or withdrawing from a drug.