Nothing puts a damper on spending time in your yard like realizing you, your kids, or your pets have stumbled into a patch of poison oak. For people (and animals) who are allergic to the oils secreted ...

Poison ivy, oak, and sumac contain an oil called urushiol that causes an allergic skin rash. These plants can be identified by their leaf structure, though some non-toxic plants look similar. To avoid ...

AUBURN UNIVERSITY, Ala. – Leaves of three, let it be. This saying is playful, but poison ivy and poison oak are no laughing matter. Contact with these plants can result in discomfort and itchiness for ...

You don't exactly have to have spent a lifetime in nature to know the old adage: Leaves of three, let it be. But that doesn't keep some people from a rash encounter with poison ivy, poison oak or ...

Medically reviewed by Jurairat J. Molina, MD Key Takeaways Start taking antihistamines two weeks before allergy season begins ...