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Cooke and Laycock mention a case of intracranial injury with extensive destruction of brain-substance around the Rolandic area; there was recovery but with loss of the so called muscular sense.
Pepper records a case in which a knife was thrust through the spheroidal fissure, wounding a large meningeal vein, causing death from intracranial hemorrhage. Nelaton describes an instance in which the point of an umbrella wounded the cavernous sinus and internal carotid artery of the opposite side, causing the formation of an arteriovenous aneurysm which ultimately burst, and death ensued.
#Intracranial aneurysm# involves the internal carotid and its branches, or the basilar artery, and appears to be more frequently associated with syphilis and with valvular disease of the heart than are external aneurysms. It gives rise to symptoms similar to those of other intracranial tumours, and there is sometimes a loud murmur. It usually proves fatal by rupture, and intracranial hæmorrhage.
More in harmony with the clinical experiences here is the fact according to Biedl "that the adrenalin affects the intracranial and the pulmonary vessels only slightly if at all." We presume that what is true of adrenalin in this respect will be true of all drugs which increase blood pressure.
From this point of origin the inflammation may spread all over the face and scalp as far back as the nape of the neck. It stops, however, at the chin, and never extends on to the front of the neck. There is great œdema of the face, the eyes becoming closed up, and the features unrecognisable. The inflammation may spread to the meninges, the intracranial venous sinuses, the eye, or the ear.
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