Dermatitis, Toxicodendron

**Definition:** An allergic contact dermatitis caused by exposure to plants of the genus Toxicodendron (formerly Rhus). These include poison ivy, poison oak, and poison sumac, all plants that contain the substance urushiol, a potent skin sensitizing agent. (From Dorland, 27th ed)

**Tree numbers:** - C17.800.174.255.100.700 - C17.800.815.255.100.700 - C20.543.418.150.700

**Synonyms:** - Rhus Dermatitis - Toxicodendron Dermatitis