Poison Ivy can cause severe rash and itching that can spread over your body when exposed to the plant, characteristic of the “3 pointy leaves pattern”. The sap of the poison ivy plant contains an oil called urushiol. This is the irritant that causes an allergic reaction in 85% of people and is also contagious. It does not affect animals. Jewelweed is always found growing near poison ivy. The Jewelweed plant has been used for centuries in North America by Native Americans and Herbalists, as a natural preventative and treatment for poison ivy and poison oak; and is a folk remedy for many other skin disorders. Poultices and salves from Jewelweed are a folk remedy for bruises, burns, cuts, eczema, insect bites, sores, sprains, warts, and ringworm.