Definition of "athetosis" []

• A series of involuntary writhing movements of the limbs, typically bilateral and symmetric and predominantly affecting the distal parts of the limbs. (noun)

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• "Many children who have spasticity or athetosis also have problems with balance."
• "Stiffness, with the knees bent or with legs separated, occurs more commonly in the child with spasticity and athetosis combined (see below)."
• "Most children with athetosis have normal intelligence, but if the muscles needed for speech are affected, it may be hard for them to communicate their thoughts and needs."