Treatment of a pigmented lesion induced by a Pelagia noctiluca sting.

A young man had persistent hyperpigmentation on the face following a jellyfish (Pelagia noctiluca) sting four years previously. This localized lesion resolved within forty days after topical hydroquinone (1.8 percent) therapy was instituted. This case is presented to demonstrate that persistent hyperpigmentation occurring after coelenterate stings can be treated with a topical bleaching agent.