Reply to Rasmussen and Olesen

Henry P Michel P Brochet A nationwide survey of migraine in France: prevalence and clinical features in adults. Cephalalgia 1992;12:229–37

Headache Classification Committee of the International Headache Society. Classification and diagnosis criteria for headache disorders, cranial neuralgias and facial pains. Cephalalgia 1988;8(suppl 7):1–96

Michel P Dartigues JF Henry P Tison S Auriacombe S Brochet B Vivares C Salamon R the GRIM Validity of the International Headache Society criteria of migraine.Neuroepidemiology 1993(in press)

Rasmussen BK Olesen J Migraine with aura and migraine without aura: an epidemiological study. Cephalalgia 1992;12:221–8 Patrick Henry, Philippe Michel 1ean Francois Dartigues, Service de Neurologie, Hôpital Pellegrin et U 330 INSERM, Université de Bordeaux II, Bordeaux, France