Poison ivy contains an oil called urushiol, which causes a red, itchy rash when it transfers to the skin. Every part of the plant contains this oil, from the roots to the stem to the leaves ...

Numerous people tend to develop an itchy rash after coming into contact with poison ivy, which is a plant that contains an oil called urushiol. This oil resides in the leaves, stems, and roots of ...

The "Back To School" episode of Harley Quinn Season 5 offers a new, less problematic take on the origins of Poison Ivy.