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Article
January 1935

CHANGES IN THE SKIN IN CHRONIC ENCEPHALITIS

Arch Derm Syphilol. 1935;31(1):35-37. doi:10.1001/archderm.1935.01460190038005
Abstract

This is a report of the results of an examination of forty-eight patients with chronic epidemic encephalitis for certain changes in the skin which Haxthausen1 described as peculiar to the disease. He described an interesting group of disorders composed of pigmentary anomalies, unusual eczemas, hypertrichosis, seborrhea, prurigo, self-induced lesions and trophic lesions.

The most striking change is that designated as the brown forehead ring.2 It is a lesion that could hardly be overlooked. It is "very like chloasma uterinum, and in its typical form looks like an arch of hyperpigmentation, 1 cm. broad, situated on the forehead a little in front of the hair-line. In shape it is like a crossbow, with the ends fairly straight at the temples, while the center is deeply arched with the convexity above." There may be variations of this, usually on the face. In one case, on the chest of a boy

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