Medically reviewed by Edmund Khoo, DDS An unhealthy tongue may look red, smooth, or black. Other signs of tongue health ...
Other conditions like acid reflux and diabetes can cause this feeling too. A lack of nutrients in the body can lead to your tongue feeling smooth, with little to no bumps on it. It may also look ...
It describes symptoms like glossitis (a red and swollen tongue) that occur with COVID-19. You may also notice bumps on the back of your tongue, sores that appear on the side, or a white coating.