Migraine-associated vertigo: a review of the pathophysiology and differential diagnosis.

The clinical diagnosis of migraine-associated vertigo may be difficult because it shares features with some other clinical conditions. This communication presents a systematic review on the epidemiology and theories of pathophysiology of migraine-associated vertigo and its distinguishing features from peripheral vestibular disorders. We searched the Cochrane Library, MEDLINE, and Google scholar for all the studies on migraine-associated vertigo published in English language between 1966 and 2010. Their references were also reviewed for completion. Data from the studies were independently extracted and assessed by the three authors using standardized data forms. There was consensus between the authors on the studies in this review that met the criteria. Forty-five studies were identified and independently assessed based on the objectives of the study by the authors. All the studies discussed on the epidemiology of the migraine-associated vertigo, six discussed on the pathophysiology, while differential diagnosis were documented in thirty-two studies. In conclusion, migraine-associated vertigo is a global distinct disease entity that can be clinically distinguished from peripheral vestibular disorders. Abstinence from trigger factors remains imperative in the control, whereas some medications have been found useful in the management.