Definition: Prolonged muscular contractions that may cause twisting of body parts, increased muscular tone, and repetitive movements.
Common Misspellings: Distonia
Examples: Dystonia can be an unusual side effect of some medications.
About.com Health's Disease and Condition content is reviewed by the Medical Review Board
Learn how you can reduce your your numbers with these nutrition and exercise tips. More >
Keep yourself, and your family, happy and healthy this fall with these tips. More >
©2009 About.com, a part of The New York Times Company.
All rights reserved.