2 doctors weighed in:
Help! how long after being exposed to poison ivy would you start getting a rash?
2 doctors weighed in

Dr. Douglas McNeill
Family Medicine
1 doctor agrees
In brief: 2 to 10 days
The speed of a poison ivy rash depends on the thickness of the application of the oil responsible for the contact dermatitis (urushiol).
Heavy applications erupt within 2 days; lighter hits take up to 10 days. If you think you have had contact, wash with soap and water asap and you may never get a rash. You can also get poison ivy up to a year after plant contact with tools, clothing, etc.

In brief: 2 to 10 days
The speed of a poison ivy rash depends on the thickness of the application of the oil responsible for the contact dermatitis (urushiol).
Heavy applications erupt within 2 days; lighter hits take up to 10 days. If you think you have had contact, wash with soap and water asap and you may never get a rash. You can also get poison ivy up to a year after plant contact with tools, clothing, etc.
Dr. Douglas McNeill
Dr. Douglas McNeill
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