Poison Ivy, Oak, or Sumac: Other Plants That Cause a Rash
Some plants contain the same oil (urushiol) found in poison ivy, oak, or sumac, or they contain a substance that is similar enough to urushiol to cause a similar rash. Contact with these plants can make you allergic to urushiol so that future contact with poison ivy, oak, or sumac will cause a rash, even if you never had previous contact with poison ivy, oak, or sumac. These plants include:
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