Progress and Prospects in Parkinson's Research/Symptoms/Choreoathetosis

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Choreoathetosis

Involuntary jerky snake-like movements usually of the arms.

The following references are relevant:-

Teräväinen and Calne  (1980)    Action tremor in Parkinson’s disease 

Bhidayasiri and Truong,(2004) Chorea and related disorders 

Perkovic et al (2010)  Sildenafil induced choreoathetosis in men with Parkinson's disease.