Persistent aura without infarction explained

Specialty:Neurology, Neuro-ophthalmology
Symptoms:Prolonged aura in vision, Visual snow
Duration:Long-term
Causes:Unknown
Risks:Migraine sufferer
Differential:Scintillating scotoma, Visual snow

Persistent aura without infarction (PAWOI) is a rare and seemingly benign condition, first described in case reports in 1982 as "prolonged/persistent migraine aura status",[1] and in 2000 as "migraine aura status", that is not yet fully understood. PAWOI is said to possibly be a factor involved in a variety of neurological symptoms, including visual snow, loss of vision, increased afterimages, tinnitus, and others. The pathogenesis of PAWOI is unknown. It is not clear which medical examinations are useful in diagnosing PAWOI. At present, PAWOI is usually diagnosed solely based on the patient's current and past symptoms. It is possible that an "overactive brain" or a chemical imbalance underlies the disorder. Various medications have been tried as treatment, notably acetazolamide,[2] valproate,[3] lamotrigine,[4] topiramate, and furosemide.[5]

Notes and References

  1. Haas. David C.. Prolonged migraine aura status. Annals of Neurology. February 1982. 11. 2. 197–9. 10.1002/ana.410110217. 7073253. 73205218.
  2. Haan. J. Sluis. P. Sluis. LH. Ferrari. MD. Acetazolamide treatment for migraine aura status. Neurology. 28 November 2000. 55. 10. 1588–9. 10.1212/WNL.55.10.1588. 11094126. 44314478.
  3. Rothrock. JF. Successful treatment of persistent migraine aura with divalproex sodium. Neurology. January 1997. 48. 1. 261–2. 10.1212/WNL.48.1.261. 9008529. 44580050.
  4. Chen. WT. Fuh. JL. Lu. SR. Wang. SJ. Persistent migrainous visual phenomena might be responsive to lamotrigine. Headache. September 2001. 41. 8. 823–5. 10.1046/j.1526-4610.2001.01150.x. 11576209. 20313330 .
  5. Rozen. Todd D.. Treatment of a prolonged migrainous aura with intravenous furosemide. Neurology. 12 September 2000. 55. 5. 732–3. 10.1212/WNL.55.5.732. 10980751. 23474035.