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.

Black hairy tongue

Black hairy tongue is a harmless condition which causes blackening pigmentation on the dorsum of the tongue. It is a very common oral condition and affects 13% of the world population. It is often due to poor oral hygiene which leads to accumulation of oral bacteria

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