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A member asked:
How long does the allergy rash take to disappear?
A doctor has provided 1 answer
Variable: Allergic contact dermatitis rash (poison ivy) can take several weeks to resolve. Rashes related to medication allergy generally improve within 48 hours of stopping the medication. Hives can wax/wane for days, weeks, months or even years. Hives can come and go within hours. If a person has continued exposure to an allergen, the rash is likely to persist.
Answered 9/28/2016
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