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Factitious urticaria: Red Dermographism
Author(s) -
WARIN ROBERT P.
Publication year - 1981
Publication title -
british journal of dermatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.304
H-Index - 179
eISSN - 1365-2133
pISSN - 0007-0963
DOI - 10.1111/j.1365-2133.1981.tb00950.x
Subject(s) - medicine , dermatology , family medicine
SUMMARY A type of reaction of the skin to superficial trauma is described which differs from ordinary dermographism. This is more easily evoked by rubbing and consists of an erythematous band in which diffuse wealing develops which can be palpated and more easily demonstrated by stretching the skin. Ordinary dermographism is excluded since a scratch as usually employed to demonstrate this produces erythema and not a well‐defined raised weal. Forty patients who showed this reaction are described and it was also seen in three out of 100 normal subjects tested.