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OverviewOverview of Poison Ivy, Poison Oak, and Poison Sumac
Poison ivy (Rhus toxicodendron or Toxicodendron radicans) is a climbing plant that contains an oily substance called urushiol. Contact with this substance can cause a severe, itchy skin rash (allergic contact dermatitis). Other plants that are related to poison ivy and also can cause an allergic reaction include poison oak (Rhus radicans, Rhus diversiloba, or Toxicodendron diversiloba) and poison sumac (Toxicodendron vernix). These plants a...Read the full article
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