Poison Oak Allergy And Rashes
Plants from the Toxicodendron genus are the most common cause of allergic contact dermatitis and include poison ivy, poison oak, and poison sumac. Touching these plants results in the deposition of oils from the leaves onto the skin, which can cause an itchy rash consisting of a linear, or streak-like group of blisters or bumps. The chemicals released from the plants, called urushiols, cause the itchy rash through an immune reaction that is different from an allergic reaction—meaning that there are no allergic antibodies involved....