A member asked:

How long does it take for a poison ivy rash to start?

A doctor has provided 1 answer
Dr. Lily Hwang answered

Specializes in Pediatric Allergy and Asthma

4hrs to 3d: From direct exposure usually it starts 4 hrs to 3 days. It will peak between 1-2 weeks and new lesions may appear up to 21 days.

Answered 4/6/2020

4.7k views

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