A member asked:

My 18 y.o. has a raised red rash that's hot to the touch and doesn't itch. it is located on her arms. what could it be? benadryl (diphenhydramine) not working.

A doctor has provided 1 answer

Impossible to say: It is impossible to begin to say without being able to visualize the rash and obtain an accurate history. Viral infections are common causes. See your primary care or a dermatologist.

Answered 2/21/2016

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