Toxicodendron

Toxicodendron is a genus of plants that includes poison ivy, poison oak, and poison sumac. These plants produce an oily substance called urushiol, which can cause skin irritation, allergic reactions, and itching when touched. Not everyone reacts to urushiol, but for those who do, even small contact can lead to a rash that may last days or weeks. It's important to recognize these plants and avoid touching them. If contact occurs, washing the skin promptly with soap and water can help reduce the reaction. Proper identification and caution are key to preventing exposure.