R = (CH2)14CH3, (CH2)7CH=CH(CH2)5CH3, (CH2)7CH=CHCH2CH=CH(CH2)2CH3, (CH2)7CH=CHCH2CH=CHCH=CHCH3, (CH2)7CH=CHCH2CH=CHCH2CH=CH2 and more.
Urushiol/ʊˈruːʃi.ɒl/ is an oily mixture of organic compounds with allergenic properties found in plants of the family Anacardiaceae, especially Toxicodendronspp. (e.g., poison oak, Chinese lacquer tree, poison ivy, poison sumac), Comocladia spp. (maidenplums), Metopium spp. (poisonwood), and also in parts of the mango tree as well as the fruit of the cashew tree.[1][2][3][4][5][6]
In most individuals, urushiol causes an allergic skin rash on contact,[7] known as urushiol-induced contact dermatitis.
The name urushiol is derived from the Japanese word for the lacquer tree, Toxicodendron vernicifluum (漆, urushi).[8] The oxidation and polymerization of urushiol in the tree's sap in the presence of moisture allows it to form a hard lacquer, which is used to produce traditional Chinese, Korean, and Japanese lacquerware.
^Cruse, Julius M.; Lewis, Robert E. (2003). Atlas of Immunology, Second Edition. CRC Press. p. 375. ISBN 978-1-4200-3994-8.
^"Can Reaction to Poison Ivy Cause Mango Allergy?". American College of Allergy, Asthma and Immunology. Archived from the original on 2014-08-03. Retrieved 2014-06-02.
^"Urushiol: Human Health Effects". NIH. Archived from the original on 2019-12-09. Retrieved 2014-06-02.
^Rietschel, Robert L.; Fowler, Joseph F.; Fisher, Alexander A. (2008). Fisher's Contact Dermatitis. PMPH-USA. p. 407. ISBN 978-1-55009-378-0.
^Aguilar-Ortigoza, Carlos J.; Sosa, Victoria; Aguilar-Ortigoza, Marcial (2003-09-01). "Toxic Phenols in various Anacardiaceae species". Economic Botany. 57 (3): 354. doi:10.1663/0013-0001(2003)057[0354:TPIVAS]2.0.CO;2. ISSN 1874-9364. S2CID 41808640.
^Tilton, Buck (2004). Wilderness First Responder: How to Recognize, Treat, and Prevent Emergencies in the Backcountry. Globe Pequot. ISBN 978-0-7627-2801-5.
Urushiol /ʊˈruːʃi.ɒl/ is an oily mixture of organic compounds with allergenic properties found in plants of the family Anacardiaceae, especially Toxicodendron...
urushiol-induced contact dermatitis, an itchy, irritating, and sometimes painful rash, in most people who touch them. The rash is caused by urushiol,...
causing urushiol-induced contact dermatitis, an itchy, irritating, and sometimes painful rash, in most people who touch it. The rash is caused by urushiol, a...
number of forms of urushiol. They vary by the length of the R chain, which depends on the species of plant producing the urushiol. Urushiol can also vary in...
of the plant contain a resin called urushiol that causes skin and mucous membrane irritation to humans. Urushiol is the same chemical that poison ivy...
from other materials. Urushiol is also the oil found in poison ivy and poison oak that causes a rash. Sap, containing urushiol (an allergenic irritant)...
lacquer tree. All members of the genus produce the skin-irritating oil urushiol, which can cause a severe allergic reaction. The generic name is derived...
(172 g/kg), bark (107 g/kg), and from old leaves (94 g/kg). Allergenic urushiols are present in the fruit peel. Mangoes are believed to have originated...
Anacardiaceae, that is native to the American Neotropics. It produces the irritant urushiol much like its close relatives poison sumac and poison oak. It is related...
forests, thickets, and dry, sandy fields. All parts of this plant contain urushiol, which can cause severe dermatitis in sensitive individuals. The risk of...
susceptible individuals. Those with a history of contact dermatitis induced by urushiol (an allergen found in poison ivy, poison oak, or poison sumac) may be most...
is intended for use by humans and furry pets after topical exposure to urushiol, the active ingredient in poison oak, poison ivy, and poison sumac. Tecnu...
(poison ivy has three). While the leaves of P. quinquefolia do not produce urushiol, the sap within the leaves and stem contains raphides (needle-shaped crystals...
example of a hapten is urushiol, which is the toxin found in poison ivy. When absorbed through the skin from a poison ivy plant, urushiol undergoes oxidation...
caused by contact with urushiol and results in a form of contact dermatitis called urushiol-induced contact dermatitis. Urushiol is spread by contact but...
orientale, Fukushima Prefect All parts of Toxicodendron orientale contain urushiol, which is known to cause severe contact dermatitis. Greene, Edward L. (1905)...
significant inflammation and local damage. Some other clinical examples: Urushiol-induced contact dermatitis Chronic transplant rejection Coeliac disease...
years in the cases of China, Japan and Korea. The best known lacquer, an urushiol-based lacquer common in East Asia, is obtained from the dried sap of Toxicodendron...
diphenhydramine, after prolonged use Topical steroid – see steroid allergy Urushiol – oily coating from plants of Toxicodendron genus – poison ivy, poison...
irritant chemically related to the better-known and also toxic allergenic oil urushiol, which is found in the related poison ivy and lacquer tree. Botanical illustration...
poison sumac (Toxicodendron vernix, syn. Rhus vernix), produce the allergen urushiol and can cause severe allergic reactions. Poison sumac may be identified...
solvent, or other chemical such as nickel sulfate, Balsam of Peru, or urushiol (poison ivy, poison oak, poison sumac). This is known as contact dermatitis...
risk exposure to numerous biohazards, including animal bites and stings, urushiol from poisonous plants, and diseases transmitted through animals such as...
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