Poison oak is similar in appearance to poison ivy but is usually found as a shrub rather than a vine. It can have clusters of three, five, or seven leaves, which resemble oak leaves—hence the name.

A rash from poison ivy, poison oak or poison sumac is caused by an oil found in these plants called urushiol. When this oil touches your skin, it often causes an itchy, blistering rash. Most people ...

A rash from poison ivy, poison oak or poison sumac is caused by an oil found in these plants called urushiol. When this oil touches your skin, it often causes an itchy, blistering rash. Most people ...

How can you tell if you're dealing with poison oak or poison ivy? Both of these plants contain urushiol -- an oily compound ...

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. A helpful old saying is “leaves ...

poison oak, poison sumac); however, one person's poison may be another person's cure. For example, poison ivy (Rhus toxicodendron) is a prominent and historic homeopathic remedy for certain kinds ...