Toxicodendron radicans, commonly known as eastern poisonivy or poisonivy, is a species of allergenic flowering plant. It has numerous subtaxons and forms both vines and shrubs. Treatment. Poisonivytreatments usually involve self-care methods at home. And the rash typically goes away on its own in two to three weeks. Effective Home Remedies & Medical Treatments. Treatment depends on the stage of your poisonivy rash, your overall health, and how your body responds to the plant’s oil (urushiol). It itches and burns doesn't it? Emuaid can help get rid of the itching rash associated with posion ivy. Learn how today!PoisonIvyTreatment, Causes, and Symptoms. Ivarest PoisonIvy Oil Removal and Itch Relief Pads, 30 Count, PoisonIvy Wipes, Max Strength, Poison Plant and Insect Bite Relief, PoisonIvy, Oak, Sumac Treatment, Anti-Itch... Common Anti-Itch Treatments. Poisonivy and oak are found in almost every state across the U.S. Roughly 85% of Americans are allergic to the oil excreted by these plants... For effective treatment and comprehensive care of poisonivy rashes, schedule an appointment with the experienced dermatologists at Pinnacle Dermatology. Thankfully, most poisonivy rashes can be treated at home, and we’ll show you how to identify, apply first aid, and treat rashes on various body parts yourself. Poisonivy oil causes allergic skin reactions for most people. Learn about the signs, symptoms, and treatment options here. Poison sumac, poisonivy, and poison oak all contain an oil called urushiol. If this oil penetrates the skin, most develop an itchy rash due to an allergic reaction.