title: Osteomalacia presenting as chorea.
abstract: A 16-year-old epileptic developed chorea. He had osteomalacia, hypocalcaemia, and hyperphosphataemia, which were due not to hypoparathyroidism but to vitamin D deficiency--itself secondary to longstanding dietary deficiency and anticonvulsant drug administration.
mesh_terms: D000293:Adolescent; D000469:Alkaline Phosphatase / Q000097:blood; D002819:Chorea / Q000175:diagnosis* / Q000209:etiology; D003937:Diagnosis, Differential; D004830:Epilepsy, Tonic-Clonic / Q000150:complications / Q000188:drug therapy; D006801:Humans; D006996:Hypocalcemia / Q000150:complications / Q000209:etiology; D008297:Male; D010018:Osteomalacia / Q000097:blood / Q000175:diagnosis*; D010634:Phenobarbital / Q000009:adverse effects / Q000627:therapeutic use; D010672:Phenytoin / Q000009:adverse effects / Q000627:therapeutic use; D010710:Phosphates / Q000097:blood; D014808:Vitamin D Deficiency / Q000139:chemically induced / Q000150:complications
chemical_list: D010710:Phosphates; D010672:Phenytoin; D000469:Alkaline Phosphatase; D010634:Phenobarbital