Depression
Depression Home Health & Medicine Conditions & Diseases Mental Disorders depression psychology Alternate titles: mental depression Edit History FAST FACTS 2-Min Summary depression, in psychology, a mood or emotional state that is marked by feelings of low self-worth or guilt and a reduced ability to enjoy life. A person who is depressed usually experiences several of the following symptoms: feelings of sadness, hopelessness, or pessimism; lowered self-esteem and heightened self-depreciation; a decrease or loss of ability to take pleasure in ordinary activities; reduced energy and vitality; slowness of thought or action; loss of appetite; and disturbed sleep or insomnia. Prozac Prozac See all media Key People: Viktor Frankl Related Topics: postpartum depression seasonal affective disorder Zung Self-Rating Depression Scale Beck Depression Inventory major depressive disorder Depression differs from simple grief or mourni...