They can become dark and lead to "hairy tongue" in up to 13% of the population. They turn brown, black, or even white, pink, or green, in color. Typically, hairy tongue does not cause pain.

Purple or bluish: A purple tongue can indicate poor blood circulation or heart problems. Kidney disease or respiratory issues ...

The furred tongue and the black hairy tongue are examples of such incidental benign conditions. Both of these conditions are due to hyperplasia of the filiform papillae, which become ...

They then become more prone to staining from nicotine and coffee, giving the tongue a brown/black 'hairy' appearance. The best way of treating it is to brush the tongue gently twice a day ...

Chronic infections, inflammation, and even gum disease can stem from neglect. Over time, your mouth can become a breeding ...