Poison Ivy, Oak, and Sumac: MedlinePlus

Spending time outdoors could result in contact with poison ivy, oak or sumac plants. Most people are sensitive, they can cause a blistering skin rash.

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Poison Ivy, Oak, and Sumac Condition, Treatments and Pictures for Adults - Skinsight

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Poison Ivy, Sumac, and Oak - Southern Iowa Mental Health Center

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Poison Ivy, Oak, and Sumac Condition, Treatments and Pictures for