Diffuse Facial Leukoderma Secondary to Localized Use of Hydroquinone.

Disorders of hyperpigmentation are extremely common, and hydroquinone remains one of the most common treatments for hyperpigmentation. Adverse events reported with hydroquinone use include acneiform eruptions, ochronosis, and irritant dermatitis; leukoderma has been reported in rare instances. Largely, these cases report leukoderma localized to the site of application. However, we report a case of diffuse facial leukoderma with only localized use of hydroquinone. With appropriate and prompt treatment, this leukoderma can respond to vitiligo treatment algorithms.