Headache of Allergic Origin
Today, one does not consider the study of the symptom headache complete without an analysis of the role that allergy may play. It has long been recognized by the layman that in certain individuals, certain foods would produce headaches which vary in severity from the mildest forms to the most annoying types. This general knowledge was held by the laity for many years before the entrance of food allergy into the field of diagnostic and therapeutic medicine. One readily recognizes that with the coming of the study of allergic patients, all problems are not solved, but that it does add another therapeutic aid to the armamentarium of the physician. This important field has withstood its trials and has definitely been accorded a place in medical thought.
That headache is a common symptom in patients who have allergy is an established fact, and this is due to the diversified phenomena seen in allergic patients. Three outstanding types of headache are associated with allergy:—first, those headaches which are associated with respiratory allergy; second, those associated with gastro-intestinal allergy, and third, those associated with the migraine syndromes.
In the work at the Cleveland Clinic in the past two and one-half years, we have observed a large group of patients with seasonal and perennial respiratory allergy. Those with perennial symptoms are seen twice as frequently as those with seasonal symptoms and of those with perennial nasal allergy, about 30 per cent complain of headache. This usually is of a dull frontal type, with. . .