Hereditary essential myoclonus.
D000368:Aged; D002648:Child; D002675:Child, Preschool; D002869:Chromosome Aberrations; D004569:Electroencephalography; D004576:Electromyography; D006801:Humans; D008297:Male; D009207:Myoclonus / Q000235:genetics*; D010375:Pedigree; D014103:Torticollis / Q000209:etiology