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A member asked:
If antihistamines help an itch, is the itch likely caused by an allergic problem?
A doctor has provided 1 answer
Possibly: That is most likely the case, however other processes can cause histamine release without being a true allergy. Also, some non selective histamine blockers like Benadryl (diphenhydramine) are sedating and decrease itch through that mechanism as well.
Answered 10/3/2016
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