Poison ivy rash is allergic
Urushiol is a colorless, or slightly yellow oil that oozes from any cut, or crushed, part of the plant, including both stem and leaves. Simply brushing against a plant may not cause a reaction. On the other hand, you may develop dermatitis without ever coming into contact with poison...
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In susceptible individuals, poison ivy causes allergic contact dermatitis. While contact may be apparent and avoidable in many cases, it... Read more »
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