A system of practical medicine . greatly enlarged, as a distinct welt, and remain in that condition forsome hours. The experiment has been made of writing with a bhnitinstrument or the finger-nail upon the skin, and after a few minutes thewriting has been shown in marked relief, attaining a thickness of fromone and a lialf to two millimetres. Tlie lesion may last from an houror two to several days, and the elevated lines are either rose-colored orwhite. Derm()gra])liisni has been observed ])rin(ipally in hystericalwomen, but it has been found also in others in whom there was no sus-picion of t
A system of practical medicine . greatly enlarged, as a distinct welt, and remain in that condition forsome hours. The experiment has been made of writing with a bhnitinstrument or the finger-nail upon the skin, and after a few minutes thewriting has been shown in marked relief, attaining a thickness of fromone and a lialf to two millimetres. Tlie lesion may last from an houror two to several days, and the elevated lines are either rose-colored orwhite. Derm()gra])liisni has been observed ])rin(ipally in hystericalwomen, but it has been found also in others in whom there was no sus-picion of this taint. This peculiar susce])tibility of the skin is regardedby dermatologists as a form of urticaria, for in many particulars itresembles this affection. It is prineij)ally interesting because of the HYSTERICAL (EDEMA. 715 sensational uses hysterical persons have made of the peculiarity whenthey found that they were possessed of it. The affection has been fullydescribed by Dujardin-Beaumetz and Bartholemy (Fig. 81). Fig. Hysterical dermographism (liarthulcmy). Hysterical CEdbma. (Edema is an interesting stigma of hysteria. It is often met with inconnection with hysterical joints and contractures. It is generallyunilateral, although exceptions to this rule have been noted and a gen-eralized form has been described. The appearance of the skin which isthe seat of hysterical oedema is sometimes white, as in ordinary dropsy;sometimes rose-colored or red; but most frequently it is a bluish orviolet color. The color usually remains the same in different attacks,even if it be located at different points. The swelling is always hard,and the pressure of the fingers makes little or no impression. Puncturesdo not give exit to serum. In most cases the oedema affects the entirecircumference of the member, but in some cases there is a locaKzedswelling. The temperature of the surface may be normal or lowered inthe white and blue varieties of oedema, but in the rose-colored and redform
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