title: Hemifacial spasm and posterior auricular muscle.
abstract: We aimed to investigate to which extent posterior auricular muscle (PAM) was affected and whether it contributed to the reflex activity in hemifacial spasm (HFS) patients. 19 HFS patients' spasm activities were recorded from facial muscles. Spasm activity of PAM was recorded synchronously on the symptomatic side in all patients. Lateral spread of blink reflex to orbicularis oris and PAMs were recorded in all but two patients. Botulinum toxin was applied to the PAM with the 14 patients presenting tinnitus, "clicking" or a "ticking" sound on the sane side and other positive auricular symptoms. After treatment, there was symptomatic improvement in 9 of 14 patients. The patients presenting with auricular symptoms and showing spasm activity in their PAMs can be thought as a candidate for botulinum toxin treatment scheme.
authors.affiliation: University of Istanbul, Cerrahpasa Medical Faculty, Department of Neurology, Istanbul, Turkey.
authors.forename: M
authors.initials: M
authors.lastname: Kiziltan
authors.forename: R
authors.initials: R
authors.lastname: Sahin
authors.forename: N
authors.initials: N
authors.lastname: Uzun
authors.forename: G
authors.initials: G
authors.lastname: Kiziltan
mesh_terms: D000328:Adult; D001767:Blinking / Q000502:physiology*; D019274:Botulinum Toxins, Type A / Q000627:therapeutic use*; D016022:Case-Control Studies; D004576:Electromyography; D005152:Facial Muscles / Q000503:physiopathology*; D005260:Female; D019569:Hemifacial Spasm / Q000150:complications / Q000188:drug therapy* / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009465:Neuromuscular Agents / Q000627:therapeutic use*; D014012:Tinnitus / Q000150:complications / Q000188:drug therapy; D016896:Treatment Outcome
chemical_list: D009465:Neuromuscular Agents; D019274:Botulinum Toxins, Type A