title: Levetiracetam-responding paroxysmal nonkinesigenic dyskinesia.
abstract: We report on a patient with 7-year history of short-lasting paroxysmal nonkinesigenic dyskinesia. The episodes occurred 100 to 125 times per day, lasted from 5 seconds to 3 minutes, and were not suppressed with sleeping, underlining the heterogeneity of phenomenology in paroxysmal dyskinesias. Neuroimaging studies showed calcifications in the basal ganglia, thalamus, brain stem, and subcortical and cerebellar regions. He was diagnosed with idiopathic hypoparathyroidism. After failure of valproate, he responded well to levetiracetam (1000 mg/d). This report revealed that intracerebral calcifications secondary to hypoparathyroidism could present as paroxysmal nonkinesigenic dyskinesia, and levetiracetam could be effective in this particular entity.
authors.affiliation: Department of Neurology, Faculty of Medicine, University of Kocaeli, Kocaeli, Turkey. drmuratalemdar@yahoo.com
authors.forename: Murat
authors.initials: M
authors.lastname: Alemdar
authors.forename: Pervin
authors.initials: P
authors.lastname: Iseri
authors.forename: Macit
authors.initials: M
authors.lastname: Selekler
authors.forename: Sezer Sener
authors.initials: SS
authors.lastname: Komsuoğlu
mesh_terms: D000328:Adult; D000927:Anticonvulsants / Q000627:therapeutic use*; D002114:Calcinosis / Q000188:drug therapy; D018450:Disease Progression; D006801:Humans; D000077287:Levetiracetam; D008279:Magnetic Resonance Imaging; D008297:Male; D009069:Movement Disorders / Q000188:drug therapy* / Q000473:pathology / Q000503:physiopathology; D010889:Piracetam / Q000031:analogs & derivatives* / Q000627:therapeutic use
chemical_list: D000927:Anticonvulsants; D000077287:Levetiracetam; D010889:Piracetam