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bipolar disorder

(Encyclopedia)bipolar disorder, formerly manic-depressive disorder or manic-depression, severe mental disorder involving manic episodes that are usually accompanied by episodes of depression. The term “manic-depr...

depression, in psychiatry

(Encyclopedia)depression, in psychiatry, a symptom of mood disorder characterized by intense feelings of loss, sadness, hopelessness, failure, and rejection. The two major types of mood disorder are unipolar disord...

psychosis

(Encyclopedia)psychosis sīkōˈsĭs [key], in psychiatry, a broad category of mental disorder encompassing the most serious emotional disturbances, often rendering the individual incapable of staying in contact wi...

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