Complicated migraine and Haemoglobin AS in Nigerians

Among 123 Nigerians with migraine seen at one clinic 49 (40%) had complicated migraine, with ophthalmoplegia in 20 and amaurosis or field defects in 13. Haemoglobin AS was found in 60% of patients with complicated migraine, compared with 20% of those with simple migraine.