My Dad has cracks on his tongue, and he was told that it was caused by his mouth being overly dry. The condition may also have a genetic component, because I also have cracks, although mine are not as bad as his are.
User Detail :
Name : Daniel-T, Gender : M, Race : White/Caucasian, Age : 26, City : Colorado Springs, State : CO, Country : United States, Education level : 2 Years of College, Social class : Lower middle class,