Walling Abigail L, Walling Hobart W
Town Square Dermatology, Coralville, Iowa.
Dermatol Online J. 2018 Feb 15;24(2):13030/qt0rc4v2qz.
Phytophotodermatitis results when skin is exposed to ultraviolet light after previous contact with a phototoxic compound. Wild parsnip (Pastinia sativa), a member of the Umbelliferae family, is an invasive plant species introduced to North America as a root vegetable. Although cultivated less commonly today, the plant is increasingly found growing wild in prairies and roadsides. The stems and leaves contain furocoumarins, which upon activation by UV light interact with oxygen. Resultant reactive oxygen species induce tissue damage manifesting initially as blistering and later as hyperpigmentation. We report the case of a woman who developed phytophoto-dermatitis after encountering wild parsnip on a midwestern prairie.
植物光皮炎是指皮肤在先前接触过光毒性化合物后再暴露于紫外线下所产生的炎症。野生防风草（欧洲防风）是伞形科植物，作为一种块根蔬菜被引入北美，属入侵物种。如今其种植已不常见，但在草原和路边越来越多地发现其野生植株。其茎和叶含有呋喃香豆素，在紫外线激活后会与氧气发生反应。产生的活性氧会导致组织损伤，最初表现为水疱，随后出现色素沉着。我们报告了一例在中西部草原接触野生防风草后发生植物光皮炎的女性病例。
