" A poison ivy rash results from a person coming into contact with the poison ivy plant, which is found in almost every region in the United States. The poison ivy plant sap called Toxicodendron radicans contains an oil- urushiol, the irritant that results in an allergic reaction and the development of a rash. Direct contact with the plant or its oil or secondary transfer can cause an allergic reaction. Receive treatment for your poison ivy ...
