Chorea:
• sudden rapid irregular involuntary quasipurposive movements/jerks (not as rapid as myoclonus)
• in face always bilateral (eg frowning, raising the eyebrows, bizarre movements of mouth and tongue
• in upper limb occur at all joints
• in lower limb usually less conspicuous
• eg Sydenham’s chorea (due to rheumatic fever); Huntington’s chorea; posterior capsular CVA; contraceptive pill chorea; thyrotoxicosis; tumour in basal ganglia
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