orthochorea

[ôr′thō-kô-rēə, -kə-]

n.

A form of chorea in which the spasms occur chiefly when the patient is in an erect posture.

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