Organic and functional nervous diseases; a text-book of neurology . t not diseased. The causes of endarteritis are syphilis, the abuse of alcohol, chronicpoisoning by lead, the development of poisons within the body as theresult of imperfect nutrition, or of indigestion due to too much foodand too little exercise, gout, nephritis, and old age. The affection isdistinctly hereditary, and in many families death from apoplexy is therule. The use of tobacco, coffee, and tea is said to predispose toendarteritis, but this is not established. Symptoms. — In the conditions of arterial sclerosis it is p
Organic and functional nervous diseases; a text-book of neurology . t not diseased. The causes of endarteritis are syphilis, the abuse of alcohol, chronicpoisoning by lead, the development of poisons within the body as theresult of imperfect nutrition, or of indigestion due to too much foodand too little exercise, gout, nephritis, and old age. The affection isdistinctly hereditary, and in many families death from apoplexy is therule. The use of tobacco, coffee, and tea is said to predispose toendarteritis, but this is not established. Symptoms. — In the conditions of arterial sclerosis it is probablethat from time to time a temporary stasis of blood may occur in the ABTERIAL SCLEBOSIS. 469 domain of small arterial branches causing a sudden local anaemia of asmall area ctf the brain. It is known that such a stasis in the arteriesof the leg gives rise to a sudden paralysis of the leg causing intermittentclaudication, in which condition the leg is useless for a few frequency with which a sudden sense of inability to talk, to walk, Fig. Endarteritis obliterans. Occlusion of the right posterior communicating artery of the circle ofWillis. The vessel has dwindled to a fibrous cord. Foci of atheromatosis are noticeable on thebasilar artery. M., aged forty-one years; case of pseudodementia paralytica urfemica. Reproducedfrom a photograph. (Berkeley, Mental Diseases.) to do any special act, or to think, without any loss of consciousness,occurs in patients suffering from arterial sclerosis leads to the supposi-tion that similar stasis may occur in the brain —not of sufficiently longduration to cause permanent softening. The so-called serous apoplexy,from which patients die, Mith no apparent lesion in the brain exceptan cfidema, may also be thus explained. 470 CEREBRAL Diseases op vasculab oeigin. A careful study of two hundred consecutive cases of apoplexy inprivate practice of which I have records has shown that in 80 per cent,of these cases there have
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