Add Yahoo as a preferred source to see more of our stories on Google. Q: My cousin was diagnosed with dystonia, what is this? A: Dystonia is a disorder of involuntary muscle contractions that may ...

Chorea-acanthocytosis is a rare genetic disorder of the nervous system. It causes involuntary jerks and twitches in the muscles, known as chorea, and star-shaped red blood cells, known as ...

Athetosis and chorea are two types of involuntary movements that can occur in children and adults with neurological conditions, such as cerebral palsy. The movements have different features, and the ...