Encyclopedia of Color Science and Technology

2016 Edition
| Editors: Ming Ronnier Luo

Scintillating Scotoma

  • Muneto Tatsumoto
Reference work entry
DOI: https://doi.org/10.1007/978-1-4419-8071-7_216




Migraine is one of the most common neurological disorders and is observed in about 11 % of the world population [1]. Migraine attacks are characterized by unilateral, throbbing and moderate-to-severe headache lasting 4–72 h, typically accompanied by nausea and photo- and phonophobia [2]. In approximately 20 % of patients, the migraine can also be preceded by transient neurological symptoms (aura) that usually develop gradually over >5 min and last for <60 min. Auras are most frequently visual (>90 %), but may also involve other sensory symptoms (pins and needles, numbness), hemiparesis or speech deficits. Visual symptom (aura) often has a bimodal progression with positive symptom (scintillating) followed by negative symptom (scotoma). To date, the trigger mechanisms of migraine with aura are cortical spreading depression (CSD). Migraine with aura (MWA) is diagnosed according to the operational diagnostic criteria of The International Classification of...

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© Springer Science and Business Media New York (outside the USA) 2016

Authors and Affiliations

  1. 1.Department of NeurologyDokkyo Medical UniversityTochigiJapan