Hydroquinone-induced localized exogenous ochronosis treated with dermabrasion and CO2 laser.

Exogenous localized ochronosis can result from the repeated use of hydroquinone-containing creams, many of which are available over the counter. We report a case that was managed by dermabrasion and CO2 laser. The incidence and proposed etiologies of hydroquinone-induced exogenous ochronosis are reviewed.