As important as poison ivy is for wildlife, it’s important for people to be able to identify the plant, even for those who ...

A patient recently came into our dermatology clinic with a rash and a story similar to many others. He had been camping with friends a few days earlier and helped carry some logs to stoke the fire.

Poison ivy belongs to the same plant family, Anacardiaceae, as mangos and cashews. All three of these plants produce urushiol, the compound that causes the itchy rash. People who chew the mango flesh ...

Poison ivy often grows in cities and suburbs, not just forests. It appears in every U.S. state except Alaska and Hawaii. If you are not sure whether a plant is poison ivy, stay away anyway to keep ...