Known as “geographic tongue” this phenomenon causes “smooth reddish” patches to form on the tongue. Its name comes from the fact these patches resemble land masses on a map or globe.

A vitamin B12 deficiency can cause a smooth, tender tongue and sometimes tongue bleeding. Vitamin B12 deficiency often results in other symptoms, such as fatigue and weakness. A rare condition ...

One of those presentations is the "COVID tongue ... symptom of benign glossitis, and you'll likely notice it around the ...

White spots on the tongue are common and there are various causes for them ... Nor says this may include: Seeing your dentist to smooth down sharp teeth Stopping the habit of chewing on your ...