A CASE OF PROBABLE INTRACRANIAL ANEURYSM ASSOCIATED WITH THE SYNDROME OF HISTAMINIC CEPHALGIA

Three interesting and important types of headache are those of histaminic cephalgia, of expanding intracranial aneurysm and of classic migraine, the last mentioned being associated occasionally with ophthalmoplegia. Histaminic cephalgia, clearly defined as a disease syndrome by Horton, 1 has these salient features: It is a brief, recurrent, violent, unilateral headache involving the temple, the eye and the neck. Usually nocturnal in onset, it is associated with congestion of the nostril and eye on the affected side, and there is profuse watering of the eye. Pressure over the swollen temporal arteries or over the common carotid artery will give transient relief. The syndrome may be precipitated by alcohol or by histamine, may be relieved in the individual attack by epinephrine, and may be permanently relieved by desensitization with histamine. The second type of headache, brought about by expanding intracranial aneurysm, may give rise to varied headaches. However, Dandy 2 has