Epidemiology

The prevalence of fissured tongue within the United States has been reported as 2% to 5%. The prevalence worldwide varies and has been reported in some areas to be as high as 21%.[1] Patients usually have fissured tongue from childhood, but the condition may become more prominent with increasing age.

Prevalence of hairy tongue varies widely, and is reported with increased frequency in tobacco smokers, and heavy tea and/or coffee drinkers.[6][7][8][9][10][11]

Geographic tongue is considered to occur in approximately 1 in 30 adults worldwide.[12]​​

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