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A member asked:
What are pin-head red dots under skin of my forearm & back of hand & lower leg after taking antihistamine? only occurs on 1 side of body at a time.
A doctor has provided 1 answer
Unusual: Antihistamines are an effective treatment for the red raised bumps that occur as part of an allergic reaction. A red rash after taking an antihistamine might represent an allergy to the medication or a reaction to one of the other components of the pill (coloring, filler, preservative, etc.) A photo of the rash and more information about time course & itchiness would help figure this out.
Answered 7/26/2017
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