Chorioathetosis
In choreoathetosis, muscle tone fluctuates form hypotonic to normal or hypertonic. There are extreme ranges of motion. Deformities are rare, but subluxation of the shoulder and finger joints often occurs.
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Athetosis: Introduction
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Athetosis refers to the condition in which slow, irregular, twisting, snakelike movements occur in the upper extremities, esp. in the hands and fingers. These involuntary movements prevent sustaining the body, esp. the extremities, in one position. All four limbs may be affected or the involvement may be unilateral. The symptoms may be due to encephalitis, cerebral palsy, hepatic encephalopathy, drug toxicity, or Huntington’s chorea or may be due to an undesired side effect of prolonged treatment of Parkinsonism with Levodopa.