P oison sumac is a poisonous plant similar to poison ivy and poison oak. Each of these plants contains an oil called urushiol. When you come into contact with this oil, it can cause a skin rash ...

The most common causes of ACD are the plants of the Rhus genus, poison ivy (toxicodendron radican), poison oak (toxicodendron quercifolium and toxicodendron diversilobum), and poison sumac ...