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An urushiol rash usually develops within a week of exposure and can last 1–4 weeks, depending on severity and treatment. In rare cases, urushiol reactions may require hospitalization. [36] Urushiol oil can remain active for several years, so handling dead leaves or vines can cause a reaction.
Urushiol / ʊ ˈ r uː ʃ i. ɒ l / is an oily mixture of organic compounds with allergenic properties found in plants of the family Anacardiaceae , especially Toxicodendron spp. (e.g., poison oak , Chinese lacquer tree , poison ivy , poison sumac ), Comocladia spp. (maidenplums) , Metopium spp .
Ordinary laundering with laundry detergent will remove urushiol from most clothing. [4] Urushiol may adhere to pet fur. [4] Urushiol oil left on clothing and surfaces can be deactivated using bleach. [17] The fluid from the resulting blisters does not spread urushiol to others. [18] [14] Blisters should be left unbroken during healing. [19]
Curing the applied sap requires "drying" it in a warm, humid chamber or closet for 12 to 24 hours where the urushiol polymerizes to form a clear, hard, and waterproof surface. In its liquid state, urushiol can cause extreme rashes, even from vapours. Once hardened, reactions are possible but less common. [citation needed]
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Typically, the rash from the urushiol oil lasts about five to twelve days, but in extreme cases it can last a month or more. [28] A urushiol rash usually develops within a week of exposure and can last 1–4 weeks, depending on severity and treatment. In rare cases, urushiol reactions may require hospitalization. [10]
An acid form of urushiol, they also cause an allergic skin rash on contact, [1] known as urushiol-induced contact dermatitis. Anacardic acid is a yellow liquid. It is partially miscible with ethanol and ether, but nearly immiscible with water. Chemically, anacardic acid is a mixture of several closely related organic compounds.
Since the SFDA does place the mango in the same family, I think it is safe to say the oil can be found on the peel of the fruit. Though the variety of the mango may be in question. — Preceding unsigned comment added by 132.190.92.85 ( talk ) 20:38, 16 October 2013 (UTC) [ reply ]