Involuntary writhing movements, particularly of the arms and hands. Athetosis is associated with several neurological disorders, such as cerebral palsy and Rett syndrome.

1871, from Greek athetos "not fixed, without position or place, set aside" + -osis. Coined by U.S. nerve specialist William Alexander Hammond (1828-1900).

A condition in which there is a succession of slow, writhing, involuntary movements of the fingers and hands, and sometimes of the toes and feet.

n. refers to slow, involuntary, recurrent movements, typically in the fingers, toes, or arms, due to lesions in the extra pyramidal tract. It is generally most evident in the upper extremities of the [..]

cerebral palsy (pop)

Slow, involuntary movements of the hands and feet.

A condition in which there is a succession of slow, writhing, involuntary movements of the fingers and hands, and sometimes of the toes and feet.

(n) a continuous succession of slow, writhing, involuntary movements of the hands and feet and other body parts

Involuntary, purposeless, disordered movements, caused by a brain lesion, in which there is a constant recurrence of slow writhing movements of the hands and feet.

A continuous stream of slow, sinuous, writhing movements, typically of the hands and feet (Modern).

A Dyskinesia characterized by an inability to maintain the fingers, toes, tongue, or other Body Parts in a stable position, resulting in continuous slow, sinusoidal, and flowing involuntary Movements. [..]

A dyskinesia characterized by an inability to maintain the fingers, toes, tongue, or other body parts in a stable position, resulting in continuous slow, sinusoidal, and flowing involuntary movements. [..]

slow, involuntary movements of the hands and feet.

Slow, repetitive, involuntary movements, especially in the hands

A movement disorder sometimes confused with Parkinson's disease that manifests in low, repetitive, involuntary, writhing movements of the arms, legs, hands, and neck that are often especially sev [..]