Poison Ivy, Oak, and Sumac Index

Featured: Poison Ivy Main Article

Poison ivy, oak, and sumac contain a substance called urushiol, which causes a rash on people who come in contact with them. Symptoms and signs include a red, swollen, itchy, blistering, bumpy rash. Treatment involves rinsing the exposed area with water, taking antihistamines and over-the-counter pain medications, using topical treatments such as calamine lotion, and applying cool compresses.


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    • Is Poison Ivy Contagious? Poison ivy produces usushiol, an oily chemical, that causes an itchy, painful reddish rash in people who come in contact with the...learn more »
      In This Article
      Is Poison Ivy Contagious? Article
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Terms related to Poison Ivy, Oak, and Sumac:

  • Allergy, Plant Contact
  • Poison Oak
  • Poison Sumac