Identifier: treatiseonner00sach (find matches)
Title: A treatise on the nervous diseases of children, for physicians and students
Year: 1905 (1900s)
Authors: Sachs, Bernard, 1858-1944
Subjects: Nervous system Children
Publisher: New York, W. Wood and company
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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esthesia of a well-marked division of the body, say ofthe hand, of the forearm, of the leg, the hips, or of circum-scribed areas in any part of the body without reference tothe anatomical distribution of the sensory nerves. (Fig. 45.)As this regional anaesthesia is frequently associated with aregional paralysis the hysterical nature of both becomesvery evident. The hysterical nature of the anaesthesia isnot only made evident by its peculiar manner of develop. HYSTERIA. 99 ment, but also by the manner in which it often disappears.In a number of cases in which I have studied this anaesthesiacarefully it would recede inch by inch, but always main-tained a certain level in the arms or legs without any ref-erence to the well-known sensory areas. Hysterical pa-tients do not present anaesthesia of the anterior or posteriorsurface of a limb, but the anaesthesia generally involvesboth surfaces. The hysterical nature of sensory disturb-ances is also established by the powerful effect of hypnot-
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FlG. 45.—The Three Types of Distribution of Anaesthesia in Hysteria: Hemianaes-thesia, Segmental, and Disseminated. Z, Hysterogenic Zones. (Dana.) ism, and of mere suggestion, which is often sufficient atleast temporarily to dislodge a complete anaesthesia. Theanaesthesia may furthermore be transferred from one limbto another, not merely by the action of magnets, or by theaction of metals as was formerly supposed, but, I am con-vinced, by any form of suggestion powerful enough to pro-duce a strong psychic impression. It is on the theory ofsuggestion that we must explain the miracles ascribed tomagneto-therapy or metallo-therapy, that played such animportant role about twenty-five years ago in France. Of the special senses, vision is most frequently subjectto hysterical disorder. In some there is true photophobia,in others a diminution of visual perception is more common, nro 00 THE NERVOUS DISEASES OF CHILDREN. and the patient may indeed be unaware of the existence ofsuch diminished

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