Asymptomatic lower lip hyperpigmentation from Laugier-Hunziker syndrome.

Laugier-Hunziker syndrome is a rare mucocutaneous pigmentary disorder. It is considered benign, but other mucocutaneous pigmentation disorders are in the differential diagnosis and should be ruled out. This report describes a woman with pigmentation of the labial mucosa of the lower lip who was successfully treated with a Q-switched 532-nm laser.