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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 ...
Phytophotodermatitis, also known as berloque dermatitis, [1] [2] [3] margarita photodermatitis, [4] [5] lime disease [6] or lime phytodermatitis [6] is a cutaneous phototoxic inflammatory reaction resulting from contact with a light-sensitizing botanical agent (such as lime juice) followed by exposure to ultraviolet A (UV-A) light (from the sun, for instance).
Lawn Love ranked nearly 380 U.S. cities to help determine 2024's worst cities for grass allergies this summer. ... 11 Spring Lawn Care Tips for Washington, D.C. 9 Best Native Plants for Your ...
By its allergic nature, this form of contact dermatitis is a hypersensitive reaction that is atypical within the population. The mechanisms by which these reactions occur are complex, with many levels of fine control. Their immunology centres on the interaction of immunoregulatory cytokines and discrete subpopulations of T lymphocytes.
The smell of freshly cut grass is evident immediately after mechanical damage, such as that done by mowing the lawn. The main compound responsible for the smell of freshly cut grass is cis-3-hexenal. It has a low odour detection threshold that humans can perceive at concentrations as low as 0.25 parts per billion.
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Photodermatitis, sometimes referred to as sun poisoning or photoallergy, is a form of allergic contact dermatitis in which the allergen must be activated by light to sensitize the allergic response, and to cause a rash or other systemic effects on subsequent exposure.
In 2014, at least five cases of tularemia were reported in Colorado and at least three more cases in early 2015, including one death as a result of lawn mowing, as noted above. [31] In the summer of 2015, a popular hiking area just north of Boulder was identified as a site of animal infection and signs were posted to warn hikers. [citation needed]