title: The Eye and Headache.
abstract: OBJECTIVE
  This article highlights painful conditions involving the eyes that are encountered in practice, emphasizing those that do not have obvious findings on the neurologic examination.
  
  
  RESULTS
  Peripheral and central sensitization are associated with chronic neuropathic ocular pain, and hyperalgesia is associated with dry eyes. The aorta and its branches are involved in 25% of patients with giant cell arteritis.
  
  
  CONCLUSIONS
  Eye pain is a common concern and one of the most difficult symptoms for the clinician to evaluate. Eye pain may be a manifestation of a primary headache disorder, as is common in migraine, the trigeminal autonomic cephalalgias, and primary stabbing headache. Secondary headache disorders, such as posterior communicating artery aneurysm, Tolosa-Hunt syndrome, and microvascular ocular motor neuropathies, frequently produce eye pain. Ophthalmic conditions producing eye pain include orbital masses, angle-closure glaucoma, intraocular inflammation, and ocular surface (corneal) disease. Of these, corneal problems are the most commonly encountered.
authors.forename: Deborah I
authors.initials: DI
authors.lastname: Friedman
mesh_terms: D003937:Diagnosis, Differential; D058447:Eye Pain / Q000150:complications* / Q000209:etiology*; D013700:Giant Cell Arteritis / Q000150:complications; D006261:Headache / Q000150:complications*; D006801:Humans; D009437:Neuralgia / Q000150:complications*