title: Cluster headache after cataract surgery.
abstract: BACKGROUND
  Symptomatic cluster-like headache has been described with some ophthalmological disorders such as glaucoma, orbital myositis, posterior scleritis, enucleation, herpes zoster ophthalmicus, and cataract surgery.
  
  
  METHODS
  We report a new case of a 79-year-old nonsmoker woman who developed cluster-like symptoms 2 days after a cataract surgery and review the 2 previously reported cases.
  
  
  CONCLUSIONS
  The surgical technique of cataract removal involves corneal incision, which can trigger the trigeminal-autonomic reflex, a pathophysiological mechanism potentially implicated in idiopathic cluster headache. Differential diagnosis in these cases includes surgical and anesthetic complications.
authors.affiliation: *Headache Outpatient Clinic, Hospital da Luz †Department of Ophthalmology, Hospital de Santa Maria, Lisboa, Portugal.
authors.forename: Raquel
authors.initials: R
authors.lastname: Gil-Gouveia
authors.forename: Ana
authors.initials: A
authors.lastname: Fonseca
mesh_terms: D000368:Aged; D002386:Cataract / Q000628:therapy; D002387:Cataract Extraction / Q000009:adverse effects*; D003027:Cluster Headache / Q000209:etiology*; D005260:Female; D006801:Humans; D011183:Postoperative Complications / Q000209:etiology*