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Urushiol in its pure form is a pale-yellow liquid with a density of about 0.968 g/mL and a boiling point of 200 °C (392 °F). It is soluble in diethyl ether, acetone, ethanol, carbon tetrachloride, and benzene. [12] [13] Urushiol is a mixture of several closely related organic compounds.
Mango leaves, stems, peels, and sap contain urushiol, an allergen also present in poison ivy, poison oak, and poison sumac that can cause urushiol-induced contact dermatitis in susceptible people. [citation needed] Cross-reactions between mango contact allergens and urushiol have been observed. Those with a history of poison ivy or poison oak ...
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. [21] [22] Typically, the rash from the urushiol oil lasts about five to twelve days, but in extreme cases, it can last a month or more. [23]
For people who have never been exposed or are not yet allergic to urushiol, it may take 10 to 21 days for a reaction to occur the first time. Once allergic to urushiol, however, most people break out 48 to 72 hours after contact with the oil. Typically, individuals have been exposed at least once, if not several times, before they develop a ...
Bone loss, which is associated with overt but not subclinical hyperthyroidism, may occur in 10 to 20% of patients. This may be due to an increase in bone remodelling and a decrease in bone density, and increases fracture risk. It is more common in postmenopausal women; less so in younger women, and men.
A fact from Urushiol-induced contact dermatitis appeared on Wikipedia's Main Page in the Did you know column on 19 August 2005. The text of the entry was as follows: Did you know... that urushiol-induced contact dermatitis accounts for 10% of all lost-time injuries in the United States Forest Service?