See a Dr.: Rashes can be caused by infections (fungus, parasites), allergies (dermatitis) or underlying disease. Each of these is treated in a different way. See your Dr for a thorough history (where did it start, where did it spread to) and examination. Your Dr will then be able to prescribe the appropriate treatment. To ease the itch immediately use calamine lotion or take diphenhydramine.
Answered 8/22/2020
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