Brushing against a poison ivy plant can cause bumps and blisters. The rash can be spread from one part of the body to another if oil from the plant remains on the skin.
Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission.
Check out these best-sellers and special offers on books and newsletters from Mayo Clinic Press.
The deadline to have twice the impact to advance healthcare research is May 15.