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Poison ivy, poison oak, and poison sumac all produce the toxin urushiol. More than half the population isĀ allergicĀ to this stuff, which will cause itching and a blistering rash if it gets on the skin.
Poison ivy, poison oak, and poison sumac all produce the toxin urushiol. More than half the population isĀ allergicĀ to this stuff, which will cause itching and a blistering rash if it gets on the skin.