symptoms of poison ivy rash
Symptoms Rash from poison ivy: Redness, small, itchy bumps (hives), and itchy skin are common. Poison ivy, oak and sumac: Signs and symptoms What you see and feel on your skin is caused by urushiol (you-ROO-shee-all). Urushiol is the oil in poison ivy, oak, and sumac. You find this oil in all parts of the plants â the leaves, stems, and even the roots.