The term fissured tongue describes the finding of multiple small furrows or grooves on the dorsal (top) surface of the tongue. These fissures can be shallow or deep, single or multiple.

You needn’t worry if your tongue looks like it has a world map drawn on it or if it’s filled with cracked and fissured as ...

Smooth, glossy surfaces often indicate nutrient deficiencies, particularly in iron-deficiency anemia. Loss of normal tongue papillae affects taste sensation and requires medical evaluation. Deep ...