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.

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

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 ...

Scratching an itchy rash really does make it worse. Now we know why, thanks to new research published today in the journal ...

The poison ivy contains an oily resin or sap in all parts of the plant that can cause an allergic reaction in most people ...

Constantly scratching and picking at an itchy rash really does make it worse. But why? According to newly released research using mice as a model, scratching aggravates inflammation and swelling in a ...

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 ...

The research highlights why avoiding scratching is essential for healthier skin. Scratching may feel good in the moment, but it often makes rashes worse by increasing inflammation. While it can help ...

As more people venture outside to enjoy warm weather, knowing how to identify and avoid poison oak could help to avoid a future of headaches and itchy red rashes ... with poison ivy, but the ...

Q. What causes rashes? A. The most common cause of a rash is contact dermatitis, an inflammation of the skin that comes from direct contact with irritants or allergens. A red, itchy rash from ...

usually an itchy rash. A mild reaction might last 5 to 12 days. A more serious reaction can last 30 days or even longer. Most people don't come into contact with poison ivy, oak, or sumac on purpose.