title: Refractory cluster headache in a patient with bruxism and obstructive sleep apnea: a case report.
abstract: BACKGROUND
  This is a case report of a 39-year-old patient with a 14-year history of clinically refractory cluster headache (CH), also presenting obstructive sleep apnea (OSA) and complaining of tooth-grinding during sleep.
  
  
  CONCLUSIONS
  Treatment of OSA with an intra-oral device allowed an immediate reduction in frequency and intensity of CH events. Furthermore, CH attacks did not occur during the 12-month follow-up period.
authors.affiliation: Dentistry Division of the Central Institute, Hospital das Clínicas, University of Sao Paulo, Brazil. analaura@usp.br
authors.forename: Ana Laura Polizel
authors.initials: AL
authors.lastname: Ranieri
authors.forename: Sergio
authors.initials: S
authors.lastname: Tufik
authors.forename: José Tadeu Tesseroli
authors.initials: JT
authors.lastname: de Siqueira
mesh_terms: D000328:Adult; D001143:Arousal; D002012:Bruxism / Q000175:diagnosis* / Q000628:therapy; D003027:Cluster Headache / Q000175:diagnosis* / Q000628:therapy; D005156:Facial Neuralgia / Q000175:diagnosis / Q000628:therapy; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D019186:Mandibular Advancement / Q000295:instrumentation; D009968:Orthodontic Appliances, Removable; D010147:Pain Measurement; D020181:Sleep Apnea, Obstructive / Q000175:diagnosis* / Q000628:therapy