<unk>  is asymptomatic and does not usually cause any alteration to the texture or thickness of the affected area. The colour can be uniform or speckled and can appear solitary or as multiple lesions. Depending on the site, depth, and quantity of pigment, the appearance can vary considerably.<unk>  is found in the following places: * Lower vermillion border (the exposed pink or reddish margin of a lip) * Tongue *<unk>  mucosa * Gingivae * Palate<unk>  affects about 3% of the population and is most likely seen in those with dark skin; however people with light skin have, on average, 30 local pigmented areas and in some circumstances will present intra-orally. They are more often found in females than males and the typical age at presentation is 40 years although they can appear at any age.
Oral pigmentation
Nipple pigmentation
Breast hypertrophy
Hypopigmentation
Trichomegaly
Blue nails
Tooth discoloration
Green nails