Dermatographism: Your skin is in a state of hyperreactivity which could be caused by an allergic mechanism to something internal or external but often no obvious cause is found. If you can't get relief with antihistamines like benadryl(causes drowsiness)or Claritin( which is nondrowsy) consult an allergist.
Answered 10/29/2015
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A doctor has provided 1 answer
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