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Urushiol-induced contact dermatitis (also called Toxicodendron dermatitis or Rhus dermatitis) is a type of allergic contact dermatitis caused by the oil urushiol found in various plants, most notably sumac family species of the genus Toxicodendron: poison ivy, poison oak, poison sumac, and the Chinese lacquer tree. [1]
Toxicodendron radicans, commonly known as eastern poison ivy [3] or poison ivy, is a species of allergenic flowering plant. It has numerous subtaxons and forms both vines and shrubs. Despite its common name, it is not a true ivy, but rather a member of the cashew and pistachio family Anacardiaceae.
Note: If you think you’ve come in contact with a poisonous plant and need help, call NC Poison Control at 1-800-222-1222. ... Common names: Eastern Poison Ivy, ...
Pileolaria brevipes, also known as poison ivy rust, is a species of autoecious fungus in the order Pucciniales. [1] Pileolaria brevipes parasitizes Toxicodendron diversilobum and Toxicodendron radicans. [2] [3] The color of this rust comes from "its asexual spores called urediospores". [3]
In terms of its potential to cause urushiol-induced contact dermatitis, poison sumac is far more virulent than other Toxicodendron species, even more virulent than poison ivy and poison oak. According to some botanists, T. vernix is the most toxic plant species in the United States (Frankel, 1991).
Contact with anything that touched the poison ivy, oak or sumac can cause a rash within 12 to 72 hours. These include pets, clothes, tools, shoes or a hiking backpack. These include pets, clothes ...
Urushiol is an oleoresin contained within the sap of poison ivy and related plants, and after injury to the plant, or late in the fall, the sap leaks to the surface of the plant, where under certain temperature and humidity conditions the urushiol becomes a blackish lacquer after being in contact with oxygen.
Urushiol-induced contact dermatitis is the allergic reaction caused by poison ivy. In extreme cases, a reaction can progress to anaphylaxis . Around 15 to 25 percent of people have no allergic reaction to urushiol, but most people have a greater reaction with repeated or more concentrated exposure.