Background: A 7-year-old Afghan boy born to consanguineous parents presented with acute generalized choreatic/myoclonic movements shortly after admission for viral encephalitis. He had a 2-year history of mild hyperkinetic upper limb movement disorder (MD). Family history is negative. Over the past year, he developed tonic-clonic seizures, and the MD progressed.
Hilz et al. (Fri,) studied this question.