Idiopathic lenticular mucocutaneous pigmentation (Laugier-Hunziker syndrome): a report of a case.

Laugier-Hunziker syndrome (LHS) is an acquired, benign, macular hyperpigmentation of the lips and oral mucosa, often associated with pigmentation of the nails. It is a rare disorder thought to be more common than the number of reported cases would suggest. It is important to include this condition in the differential diagnosis of diffuse oral pigmentation. Here we report the first case of the Laugier-Hunziker syndrome in Scandinavia. Other conditions causing diffuse or multifocal pigmented oral lesions are discussed.