Organic and functional nervous diseases; a text-book of neurology . xactly with that of peripheral nerves, and they accompany nervelesions too frequently to be explained on any theory of coincidence. Hypertrophy. — Trophic changes are not limited to the process ofatrophy. There are conditions of hypertrophy of supposed nervousorigin. Samuel considers the hypertrophy of one testicle which attendsatrophy of the other from section of. its nerve as an example of has been ascertained that one kidney hypertrophies when the otheris atrophied or extirpated. When the spleen is removed the lymph
Organic and functional nervous diseases; a text-book of neurology . xactly with that of peripheral nerves, and they accompany nervelesions too frequently to be explained on any theory of coincidence. Hypertrophy. — Trophic changes are not limited to the process ofatrophy. There are conditions of hypertrophy of supposed nervousorigin. Samuel considers the hypertrophy of one testicle which attendsatrophy of the other from section of. its nerve as an example of has been ascertained that one kidney hypertrophies when the otheris atrophied or extirpated. When the spleen is removed the lymphaticglands increase in size. But these facts are capable of another explana-tion — viz., that increased demand upon the organ leads to its increasedgrowth. Hypertrophy of the skin and of the tongue is seen in cretinsin contrast with the deformity of the body and atrophy of the hemihypertrophy of the face has been noticed in several cases, thecounterpart of hemiatrophy ; and in one case a unilateral hypertrophyof the entire body was observed. Fig. Trophoedema of the hands. Icon, de la Salpetrigre, July, 1910. Fig. 321 shows a condition of hypertrophy of one leg due to con-genital oedema and Fig. 320 shows the condition of the hands in acase of hypertrophy of similar origin. In both cases the conditionwas permanent and not variable, and in the former it was presentthrough tliree generations in different members of the family, andhence was considered hereditary. The local thickening of the skinknown as ichthyosis hystrix, and other hypertrophies of the skin, cer-60 946 TEOPEIC NEUROSES. tain deposits of pigment, and vitiligo, have been ascribed to nervouscauses. Mitchell has recorded cases of abnormal growth of the nailsand hair after injuries to the nerves, and similar phenomena have fol-lowed central lesions and are common during attacks of insanity, dis-appearing when the patient recovers. He has also described a thicken-ing of the skin of the first three fing
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