Fissured Tongue

Fissured tongue is a condition frequently seen in the general population that is characterized by grooves that vary in depth and are noted along the dorsal and lateral aspects of the tongue.

Pathophysiology

 Fissured tongue affects only the tongue and is a finding in Melkersson-Rosenthal syndrome, which consists of a triad of fissured tongue, granulomatous cheilitis, and cranial nerve VII paralysis (Bell palsy)

Epidemiology

Frequency

United States: ~ 2-5% of the population.

International:  21% worldwide population.

Fissured tongue is a totally benign condition and is considered by most to be a variant of normal tongue architecture. When seen in association with Melkersson-Rosenthal syndrome, the morbidity is due not to the fissured tongue but is secondary to the granulomatous inflammation of the lips/facial soft tissues and facial paralysis.

Read more :
http://emedicalhub.com/fissured-tongue/
http://emedicine.medscape.com/article/1078536-overview