turing of the left upper extremity. The dystonic posture of the left upper extremity caused levitation of the arm with flexed fingers and an extended wrist. Stimulussensitive generalized myoclonic jerks were Dear Sir, Creutzfeld-Jakob disease (CJD) is a progressive spongiform encephalopathy that is mainly characterized by rapidly progressive dementia, myoclonus, ataxia, epilepsia partialis cont...