An curved arrow pointing right. Only 10% to 20% of Americans aren't allergic to poison ivy's rash-inducing oil, urushiol. Rising atmospheric carbon dioxide levels are causing poison ivy leaves to ...

Learn how to identify poison ivy, oak, and sumac plants and the rashes they cause. Your child was playing outside (yes!) but ...

presented with a rash on his face. The child had been playing in the yard a day earlier and had contact with some "weeds" which the child's father identified as poison ivy. That evening his mother ...

Poison ivy, poison oak, and poison sumac are three plants notorious for causing itchy, uncomfortable rashes that can turn a pleasant outdoor experience into a nightmare. These plants contain ...