. Le manuel de référence des maladies de la peau. Voisin-cagoule des patchs. La couleur des patches est caractère-istic, et peut être définie comme lilas. Il s'agit d'une importante indiagnostic de l'aide. Les papules et les patchs de la disappearinglaissent derrière eux des taches pigmentées, légèrement atrophiques, qui, après un certain temps, disparaissent. C'est encore un point d'intérêt quant à savoir si le papule individuel s'agrandit de manière périphérique ou non. Comme le psoriasis, les papules du lichen planus peuvent apparaître sur des surfaces upongraissées. La maladie se rencontre le plus souvent sur la face antérieure des poignets et des avant-bras, et sur le

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. The ready-reference handbook of diseases of the skin. neighbor-hood of the patches. The color of the patches is character-istic, and may be defined as lilac. It is an important aid indiagnosis. Both the papules and patches on disappearingleave behind pigmented, slightly atrophic spots, which, aftera time, fade away. It is still a moot-point as to whether theindividual papule enlarges peripherally or not. Like thoseof psoriasis, the papules of lichen planus may appear uponscratched surfaces. The disease is most often met with upon the anterior sur-face of the wrists and forearms, and upon the inside of theknees, the former being the favorite location. But it mayoccur anywhere, other favorite locations being the flanks, 3 J 8 DISEASES OF THE SKIN. lower part of the abdomen, and the calves, and it may in-volve a large part of the body, though it rarely becomesgeneral. The mucous membranes of the lips and mouth areaffected but rarely, and the disease then appears as whitespots difficult if not impossible of diagnosis without the oc- FiG. 37.. Lichen ruber moniliformis. (After Taylor.) currence of the* typical eruption on the integument. As arule, there is more or less symmetry shown in the dispositionof the efflorescences; and pruritus, which sometimes ismarked. The general health is often unaffected, but, onthe other hand, many of the subjects of the disease are not LICHEN PLANUS. 319 in perfect condition when the disease begins, and not a fewothers become greatly broken down on account of the loss ofsleep and continual discomfort caused by the pruritus. Thecourse of the disease is chronic, and new outbreaks are liableto occur. True relapses usually do not occur when the dis-ease is once cured. Kaposi1 has described a unique form of this diseaseunder the name of lichen ruber moniliformis, in which thetypical lesions became transformed into keloidal nodesarranged in lines (Fig. 37). The nodes were in someplaces as large as cherries with their bases confluent andtheir

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• bookcentury1800
• bookdecade1890
• booksubjectskin
• bookyear1896