Poison Ivy, Sumac, & Oak
These nasty weeds are the single most common cause of allergic reactions in the United States. Poison ivy, poison oak and poison sumac grow almost everywhere in the US except Hawaii, Alaska and some desert areas of Nevada. Poison ivy usually grows east of the Rocky Mountains and in Canada. Poison oak grows in the Western United States, Canada and Mexico and in the southeastern states. Poison sumac grows in the eastern states and Southern Canada.
Treatment: If you think you’ve had a brush with a poisonous plant and believe to have a severe case, prescription cortisone can halt the reaction if used early. If you know you’ve been exposed and have developed severe reactions in the past, consult one of our dermatology professionals by making an appointment.