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:
The ginkgo tree.
The Japanese lacquer
Mangoes (the allergenic oil is in the fruit's rind and
Cashews (the allergenic oil is in the
The Indian marking nut tree.
Tropical silk oaks
(sometimes grown as ornamental houseplants).
How this information was developed to help you make better health decisions.