Learn how to identify poison ivy, oak, and sumac plants and the rashes they cause. Medically reviewed by Wendy L. Hunter, M.D. Your child was playing outside (yes!) but then an hour later ...

Poison ivy has leaves in groups of three, a green or reddish tint, and a hairy vine. A poison ivy rash looks like small, red bumps that can sometimes progress into blisters. To avoid poison ivy ...

Poison ivy (Toxicodendron radicans) is a vine that contains an oily resin known as urushiol. According to the Centers for ...

When you’re spending time outdoors this summer, in your own yard or hiking in a park, it’s useful to know to spot poison ivy.

Here's how you can identify, treat, and prevent poison ivy rashes. What is a poison ivy rash? Poison ivy, poison oak, and sumac all produce urushiol, an oily sap that causes an allergic reaction ...

Another plant you really want to avoid touching is the wild parsnip. These look related to the aforementioned giant hogweed, ...

Like poison ivy and poison sumac, poison oak releases an oil called urushiol when it sustains damage. Your skin absorbs this allergen when you touch the plant. You may be able to reduce symptoms ...