When out in nature, we all know you’re not supposed to wander into the bushes. But things happen. You take a wrong turn or ...

Enjoying the outdoors carries the danger of running into nature’s less-friendly side: toxic plants and animals.

If you've never received a rash from poison oak, ivy or sumac, the rash could last 21 days or longer. If you have had the rash previously, it will last one to 14 days.

Eastern poison ivy grows as either a plant on the ground or as a vine with aerial roots to secure itself around trees or other objects. Greenish flowers appear with five petals about 3 millimeters ...

Photo of poison ivy. Poison ivy belongs to the Anacardiaceae family, and there are about 30 species that grow in the Americas, but mostly Asia, according to the American Museum of Natural History.

If you've never received a rash from poison oak, ivy or sumac, the rash could last 21 days or longer. If you have had the rash previously, it will last one to 14 days.

Poison ivy causes allergic reactions in most people—and pets—due to an oily compound called urushiol found in the plant’s leaves, stems and roots. This same chemical is also present in ...