They can then trap bacteria, yeast, and food, which add to the buildup. Smoking can also increase your risk of hairy tongue, because it facilitates the buildup of bacteria and plaque on your ...

Black hairy tongue occurs when the papillae (the upper ... the discoloration is caused by the collection of debris or bacteria on the papillae Diagnosis is based on appearance and evaluation ...

A yellow tongue usually occurs as part of hairy tongue syndrome, which is when bacteria or other debris accumulate on the ...

⁴ These color variations often arise from external factors such as tobacco use, food residues, or bacteria.⁶ While typically asymptomatic, hairy tongue can cause discomfort, with some patients ...