![Coated/hairy tongue develops when the keratin accumulates more than normal, leading to a coating or thickening of the tongue dorsum. : r/WTF Coated/hairy tongue develops when the keratin accumulates more than normal, leading to a coating or thickening of the tongue dorsum. : r/WTF](https://i.redd.it/4qgfx1k3dxua1.jpg)
Coated/hairy tongue develops when the keratin accumulates more than normal, leading to a coating or thickening of the tongue dorsum. : r/WTF
![SciELO - Brasil - Black coated tongue in integrative medicine: An alarm signal Black coated tongue in integrative medicine: An alarm signal SciELO - Brasil - Black coated tongue in integrative medicine: An alarm signal Black coated tongue in integrative medicine: An alarm signal](https://minio.scielo.br/documentstore/1806-9282/RZKLDVF44tP64DqMbdF4Wsr/c0b31ef946ad23f643e84e9c21b134bd1124e044.jpg)
SciELO - Brasil - Black coated tongue in integrative medicine: An alarm signal Black coated tongue in integrative medicine: An alarm signal
![Brownish-black discoloration of the posterior two-thirds of the tongue... | Download Scientific Diagram Brownish-black discoloration of the posterior two-thirds of the tongue... | Download Scientific Diagram](https://www.researchgate.net/publication/235646810/figure/fig1/AS:213779557163010@1427980426048/Brownish-black-discoloration-of-the-posterior-two-thirds-of-the-tongue-after-two-weeks-of.png)