Poison Ivy Rash. If they can, wear higher socks or longer clothing to cover their legs." Poison ivy (Toxicodendron radicans) is a toxic plant that causes an itchy and sometimes painful rash in most people when they touch it. A clear oil in the plant's sap, called urushiol, causes the.
But they're not the only plants that can irritate your skin. A rash from poison ivy, poison oak or poison sumac is caused by an oil found in these plants called urushiol. Poison ivy, poison oak and poison sumac all have an oily resin throughout the plant that can create an allergic reaction that lasts for weeks. "Be aware of your surroundings.
Poison ivy (botanical name Toxicodendron radicans) is a plant that grows almost everywhere in the United States.
But they're not the only plants that can irritate your skin.
A clear oil in the plant's sap, called urushiol, causes the. This rash, known as contact dermatitis or rhus dermatitis, is actually. When urushiol, the allergenic substance in the oil contacts the skin of people allergic to poison ivy, it causes an inflammatory reaction.