Dermographism | definition of dermographism by Medical dictionary
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A form of urticaria (hives) in which a pale raised wheal and red flare are produced on the skin when it is gently stroked or scratched. Synonym: dermatographism See: illustrationillustration
References in periodicals archive
: Occurrence of eryhtema and swelling in a few minutes after the skin is marked with a solid object indicates presence of dermographism
This is known as "black dermographism
," which translates literally to "black writing on the skin.
A positive reaction at the negative control site is associated with dermographism
, in which trauma to the skin causes wheals.