Poison ivy, oak, and sumac
![poison ivy warning sign](http://images.ctfassets.net/1ny4yoiyrqia/58bvhUG1vVJBKGO65V61Qb/da73d5587941b4330392b5c32cad97d5/Public_Everyday_Itchy_Poison_ivy-Who_gets_rash.jpg?w=450&h=300)
While poison ivy is the most common cause of contact dermatitis in the United States, a host of other common plants are capable of producing skin reactions.
![woman washing hands](http://images.ctfassets.net/1ny4yoiyrqia/5DfeQdurYSfMp8TEmkHKS9/8470c8b5ee1684f1db39d772908dac5d/Public_Everyday_Itchy_Poison_ivy__Touch_a_plant_Wash-hands.jpg?w=450&h=300)
If you think you’ve touched one of these plants, acting quickly may prevent a rash. Here’s what dermatologists recommend you do immediately after encountering poison, ivy, oak, or sumac.
![A wooden sign on the forest floor warns of poison ivy](http://images.ctfassets.net/1ny4yoiyrqia/1YEVObHejOEZYOvbF1JZI2/c71c2f3718c0a791b427044b0ddba923/Poison-ivy-featured.png?w=450&h=300)
It’s an oil in these plants that causes the rash. By taking some precautions, you may be able to prevent the oil from getting on your skin.
![poison ivy rash on arm](http://images.ctfassets.net/1ny4yoiyrqia/5h7VUozw8Mx7sjvDr6wg81/870e3ac1af0ce79e6d37ed7c0f8ced2b/Public_Everyday_Itchy_Poison_ivy-_Treat_rash-Poison-ivy-rash.png?w=450&h=300)
In this video, you’ll find out what dermatologists recommend for treating the rash at home.
![Poison oak leaves held by someone with a poison oak rash on their arm](http://images.ctfassets.net/1ny4yoiyrqia/2pmENfz7Bu0QpUOKx3t8iB/361b34b6cff931b0c07c65fa87c9fcc0/poison-ivy-treat-rash-card.png?w=450&h=300)
Most people develop a red, itchy rash with blisters, but the rash can show up in other ways. Pictures show you how this rash can appear on the skin.
![man cutting weeds](http://images.ctfassets.net/1ny4yoiyrqia/5Ri4ElChfsAzwVFhuHcuWd/5d9f2245a3cb6a36eedb9199e38b6836/lawn-mowing.jpg?w=450&h=300)
Your skin absorbs the oil from these plants quickly, but you rarely see a rash right away. Find out how long it can for a rash to appear.
![Happy family walking through woodland grass area](http://images.ctfassets.net/1ny4yoiyrqia/5hpzFGoAFh9DzsYHnUChch/2b9a5f8c3939ad305f926e95a65b9005/poison-ivy-who-gets-card.png?w=450&h=300)
Some people develop one rash and later see more rashes on their body, but does this mean that the rash is contagious?