Not as Bland as You May Think: Celery (Apium graveolens) Commonly Induces Phytophotodermatitis.

Often consumed for its nutritious benefits, celery (Apium graveolens) contains furocoumarins and psoralens that have photosensitizing properties and can induce phytophotodermatitis (PPD) when exposed to UV light. Clinical manifestations of PPD include an eruption of vesicles in sun-exposed areas. When consumed as part of a typical diet, the amount of furocoumarins in celery generally is insufficient to induce PPD; however, individuals who regularly handle celery or consume produce that is infected with fungus as well as those who use tanning beds are at increased risk for this painful reaction. In this article, we detail the possible consequences of celery exposure, an unsuspecting plant, and the cutaneous reactions that can follow with photosensitization.