Further Studies in Allergic Migraine: Based On a Series of Two Hundred and Two Consecutive Cases*t

IN a recent work on the hereditary factor in allergic diseases by one of us1, it appears that migraine is interchangeable in the linkage with asthma and seasonal hay fever, which is excellent evidence that they have a common etiologic factor, namely, a specific sensitization. That protein sensitization is the causative factor in true bronchial asthma and seasonal hay fever is generally accepted. In a previous study2 of allergic migraine a family history of allergy was elicited in 85.4 per cent of all cases. We ob-served that many asthmatic patients also suffered from migraine. A large per cent of migraine cases studied gav