title: Cluster headache associated with a sixth nerve palsy: a case report.
abstract: BACKGROUND
  Cluster headache is a rare primary headache disorder characterized by recurrent, stereotyped short-lasting attacks of severe, unilateral head pain accompanied by autonomic symptoms.
  
  
  RESULTS
  Ophthalmic features such as conjunctival injection, lacrimation, ptosis and miosis occur in the vast majority of patients with cluster headache, whereas co-existent ocular movement disorders are rare.
  
  
  CONCLUSIONS
  To the best of our knowledge, only two documented cases of cluster headache with external ocular movement disorders have been reported. We describe herein an additional case with this unusual finding and discuss the putative pathophysiology of cluster headache associated with ophthalmoparesis.
authors.affiliation: Albert Einstein College of Medicine, Montefiore Headache Center, 1575 Blondell Avenue, Bronx, NY 10461, USA. bgrosber@montefiore.org
authors.forename: Brian M
authors.initials: BM
authors.lastname: Grosberg
authors.forename: Sarah
authors.initials: S
authors.lastname: Vollbracht
authors.forename: Matthew S
authors.initials: MS
authors.lastname: Robbins
authors.forename: Richard B
authors.initials: RB
authors.lastname: Lipton
mesh_terms: D020434:Abducens Nerve Diseases / Q000150:complications* / Q000188:drug therapy / Q000503:physiopathology*; D000893:Anti-Inflammatory Agents / Q000627:therapeutic use; D003027:Cluster Headache / Q000150:complications* / Q000188:drug therapy / Q000503:physiopathology*; D003907:Dexamethasone / Q000627:therapeutic use; D018682:GABA Agents / Q000627:therapeutic use; D006801:Humans; D008297:Male; D014635:Valproic Acid / Q000627:therapeutic use; D014665:Vasodilator Agents / Q000627:therapeutic use; D014700:Verapamil / Q000627:therapeutic use; D055815:Young Adult
chemical_list: D000893:Anti-Inflammatory Agents; D018682:GABA Agents; D014665:Vasodilator Agents; D014635:Valproic Acid; D003907:Dexamethasone; D014700:Verapamil