Document Type


Publication Date

October 2004


This article has been peer reviewed. It is the authors' final version prior to publication in Cephalalgia 24(10):906-907, October 2004. The The definitive version is available at ( Copyright (c) 2004 by Blackwell Publishing, Inc.


Seventy to 80% of persons with migraine develop allodynia during the course of a severe attack. During a migraine attack, allodynia spreads topographically to extratrigeminal territory. Dynamic mechanical allodynia, otherwise known as brush allodynia (BA), is a subtype of allodynia that is easily tested. Ashkenazi & Young recently reported on the immediate benefits of greater occipital nerve (GON) block on brush allodynia and pain in migraine and in cluster headache. In these studies, testing was performed at fixed sites in the trigeminal and cervical distributions. Allodynia in thoracic dermatomes was not studied.

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