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The nosology, classification and pathophysiology of ophthalmoplegic migraine (OM) remains complex and debatable. A recently proposed classification of OM leaves several caveats. A critical analysis of all reported cases of OM (1993-2010) has been made incorporating the authors' own experience to arrive at a simple, unambiguous and easy to use diagnostic criteria and classification of OM. Between 2005 and 2010, 18 adult cases of OM had been seen whose clinical details are summarized. Most had sixth nerve palsies associated with migraine-like headaches lasting more than 4 days. Other possibilities were carefully excluded. All subjects responded to corticosteroids favorably. We prefer using the term ophthalmoplegia with migraine-like headache (OMLH) rather than OM. We classify OMLH as a migraine subtype (1.7) and into two groups-childhood-onset type (where third nerve palsies and nerve enhancement are common) and adult-onset type (where sixth nerve palsies are more common and nerve enhancement unusual). This clinico-radiological classification does not in any way hint at any difference in pathophysiology between the two groups.

Ophthalmoplegic migraine: A critical analysis and a new proposal