cyclothymic disorder

[sī′klə-thīmĭk]

n.

A chronic mood disturbance generally lasting at least two years and characterized by mood swings including periods of hypomania and depression.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.