A person’s tongue is generally flat and does not have significant grooves. Fissured tongue causes a person to develop one or more grooves on the top portion of their tongue. It does not usually ...

If you like to stick your tongue out at yourself in the mirror while brushing your teeth—or perhaps for no reason at all—you may have noticed your tongue is not totally smooth. It may have some ...

There are many possible causes for a cracked tongue. They include vitamin deficiencies and underlying conditions, such as psoriasis. Cracked tongue is formally known as lingua plicata. According to ...