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.

The plant may have yellow or green flowers or yellow-green berries, depending on the time of year. Like poison ivy and poison sumac, poison oak releases an oil called urushiol when it sustains damage.

Poison ivy (Toxicodendron radicans) is a vine that contains an oily resin known as urushiol. According to the Centers for ...

All parts of the plant, including roots, can cause an allergic reaction year-round, according to the American Academy of Dermatology. Poison oak is commonly confused with poison ivy, but the two ...

One such plant is poison sumac ... Poison sumac is considered more allergenic than poison ivy and poison oak, which are other well-known plants in the Toxicodendron genus of the sumac family.

Considering taking supplements to treat poison oak and poison ivy dermatitis? Below is a list of common natural remedies used to treat or reduce the symptoms of poison oak and poison ivy dermatitis.

Dermatitis. 2008;19(1):48-51. This report describes a severe case of black-spot poison ivy dermatitis, a relatively rare presentation of poison ivy dermatitis, occurring on three occasions in the ...