Photoirritation, or phototoxicity, is a chemically induced nonimmunologic skin irritation requiring light, with skin response resembling sunburn (30). Photoaller-gic dermatitis is a subset of photosensitive dermatitis, which results from UV-induced excitation of a chemical applied to the skin. Photoallergic reactions require a period of sensitization. The reactions are usually delayed, manifesting days to weeks or years after the UV exposure (31). To date, there remains a paucity of vulvar experimental and epidemiological data on the two topics, probably due to the relatively sun-protected location of vulvar skin.
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The term vaginitis is one that is applied to any inflammation or infection of the vagina, and there are many different conditions that are categorized together under this ‘broad’ heading, including bacterial vaginosis, trichomoniasis and non-infectious vaginitis.