Recessively inherited myotonia congenita.
D002675:Child, Preschool; D003241:Consanguinity; D004576:Electromyography; D005260:Female; D005808:Genes, Recessive; D006801:Humans; D008297:Male; D009224:Myotonia Congenita / Q000235:genetics*; D010375:Pedigree