Encyclopedia of Child Behavior and Development

2011 Edition
| Editors: Sam Goldstein, Jack A. Naglieri

Unipolar Depression

Reference work entry
DOI: https://doi.org/10.1007/978-0-387-79061-9_2990
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Synonyms

Definition

Unipolar depression consists of one or more episodes of moderate to severe depression with persistent depressed mood and other symptoms of depression including suicidal ideation, suicide attempts, inability to experience pleasure when doing normally pleasurable activities, impaired concentration, change in appetite, change in weight, difficulty sleeping, and/or increased sleep. These major depressive episodes cannot be due to a medical condition, medication, abused substance, or Psychosis. If Manic, Mixed, or Hypomanic Episodes develop, the diagnosis is changed to Bipolar Disorder [1].

Description

Epidemiology

Unipolar Depression (and related suicide attempts) is a major cause of death worldwide. Prevalence varies widely, from 3% in Japan, 11% in Britain to 17% in the US. In most countries the number of people who would suffer from unipolar depression during their lives falls within an 8–12% range [8...

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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  1. 1.Department of PsychologyUniversity of NicosiaNicosiaCyprus