dermatographism /der·ma·tog·ra·phism/ (der″mah-tog´rah-fizm) urticaria due to physical allergy, in which moderately firm stroking or scratching of the skin with a dull instrument produces a pale, raised welt or wheal, with a red flare on each side.dermatograph´ic
dermatographism
black dermatographism black or greenish streaking of the skin caused by deposit of fine metallic particles abraded from jewelry by various dusting powders.
white dermatographism linear blanching of (usually erythematous) skin of persons with atopic dermatitis in response to firm stroking with a blunt instrument.
der·ma·tog·ra·phism (dûr m -t g r-f zm)n. A form of urticaria in which skin welts develop along the lines where one has been stroked or scratched. Also called dermographia, dermographism. |
dermatographism
urticaria due to physical allergy in which a pale, raised welt or wheal with a red flare on each side is elicited by stroking or scratching the skin with a dull instrument.
dermatographism
Dermographism Dermatology A wheal-and-flare reaction evoked by firmly stroking the skin
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