Recognize, Prevent and Treat Poison Ivy, Poison Oak, and Poison Sumac

Learn what causes poison ivy, oak or sumac rash and how to treat it, as well as tips on recognizing, avoiding contact with, and eradicating these toxic plants.

Caution Poison Ivy Sign
Poison ivy can be hard to recognize: not even botanists can agree on how many varieties there are.
PHOTO: FOTOLIA/NATALIEJEAN