Nervous and mental diseases . variety, some-times called the Charcot-Marie type,or the neurotic form, is marked bythe early atrophic shrinking of theperoneal muscles. The calves arenext involved and the thighs disease may thus be confinedto the lower extremities for it invades the trunk andupper extremities, first affecting thehands. It shows fibrillar twitch-ings, the electrical changes of de-generation, and presents undoubtedcord-lesions. Thejuvenile type of Erb, also calledthe brachial form, affects mainly themuscles of the arms and shoulders,and appears in early
Nervous and mental diseases . variety, some-times called the Charcot-Marie type,or the neurotic form, is marked bythe early atrophic shrinking of theperoneal muscles. The calves arenext involved and the thighs disease may thus be confinedto the lower extremities for it invades the trunk andupper extremities, first affecting thehands. It shows fibrillar twitch-ings, the electrical changes of de-generation, and presents undoubtedcord-lesions. Thejuvenile type of Erb, also calledthe brachial form, affects mainly themuscles of the arms and shoulders,and appears in early youth, and usually in several members of the samefamily. The facioscapulohumeral form, or the type of Landouzy-Dejerine,affects, face, shoulder, and arm, or may be considered as the brachialform plus facial involvement. These cases furnish marked instancesof the myopathic facies. The infantile or Werdnig-Hoffman type occurs in family groups, usuallyappearing during the first years of life and coming to a fatal termination 27. Fig. 175.—A mixed case showing fa,cioscapulohumeral involvement, peronea1wasting, and a foot deformity similar tothat of Friedreichs disease. There werefibrillary twitchings and the reaction ofdegeneration in the leg mnscles. 418 DISEASES OF- THE CORD PROPER. in one to four years. The movements and control of the hip-joints arefirst affected, followed by feebleness of the muscles of the back and abdo-men, then of the neck and shoulders. Later the atrophy and paralysisaffect the arms and forearms, so that the child is rendered quite facial, buccal, and faucial parts are not implicated. Death ensuesfrom respiratory feebleness and pulmonary complications.
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