" With summer approaching, it is important to understand how to prevent contact with poisonous plants such as poison ivy, poison oak and poison sumac. These plants thrive in summer weather and, and their stems and leaves are covered in a layer of oil called urushiol. Once this oil comes into contact with your skin, it causes red bumps that irritate and inflame the skin. These reactions usually occur within 12-72 hours of contact, and can ...
