poison ivy

Poison Ivy, Oak, and Sumac

Poison Ivy, Oak, and Sumac   A substance known as urushiol (yur-oo-shee-aal) can be found in poison ivy, oak, and sumac.  You may develop a rash if you are allergic to this oil.  Almost everyone who comes into contact with this oil develops a rash due to the fact that the majority of people are […]

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