|Classification and external resources|
Fissured tongue (also known as "scrotal tongue," "lingua plicata," "Plicated tongue,":1038 and "furrowed tongue":800) is a benign condition characterized by deep grooves (fissures) in the dorsum of the tongue. Although these grooves may look unsettling, the condition is usually painless. Some individuals may complain of an associated burning sensation.
It is a relatively common condition, with a prevalence of between 6.8% and 11% found amongst children. Often hereditary, may also be part of degenerative process. The prevalence of the condition increases significantly with age, occurring in 40% of the population after the age of 40.
It is a relatively common condition, with an estimated prevalence of 6.8%–11% amongst children. Males are more commonly affected. The condition may be seen at any age, but generally affects older people more frequently. The condition also generally becomes more accentuated with age. The prevalence of the condition increases significantly with age, occurring in 40% of the population after the age of 40.
The clinical appearance is considerably varied in both the orientation, number, depth and length of the fissure pattern. There are usually multiple grooves/furrows 2–6 mm in depth present. Sometimes there is a large central furrow, with smaller fissures branching perpendicularly. Other patterns may show a mostly dorsolateral position of the fissures (i.e. sideways running grooves on the tongue's upper surface). Some patients may experience burning or soreness.
The cause is unknown, but it may be partly a genetic trait. Aging and environmental factors may also contribute to the appearance.
Fissured tongue is seen in Melkersson-Rosenthal syndrome (along with facial nerve paralysis and granulomatous cheilitis). It is also seen in most patients with Down syndrome, in association with geographic tongue, in patients with oral manifestations of psoriasis, and in healthy individuals. Fissured tongue is also sometimes a feature of Cowden's syndrome.
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