Taste and Pain Response in Burning Mouth Syndrome With and Without Geographic Tongue.

To assess the effect of geographic tongue (GT) on taste, salivary flow, and pain characteristics in burning mouth syndrome (BMS) to determine whether GT is a contributing factor to BMS and whether BMS and GT represent similar patient populations. A retrospective chart study was conducted. Patients with a diagnosis of BMS or BMS/GT were included. Data regarding smell testing, spatial taste-testing, salivary flow, oral pH, and subjective pain rating on a generalized labeled magnitude scale (gLMS) were collected. No significant differences in age, gender, oral pH, smell, or pain were found between groups. Stimulated and unstimulated salivary flow were significantly lower in BMS/GT. Taste responses to all taste stimuli and to ethanol were significantly lower in BMS, with the exception of sour at the fungiform papillae. BMS and BMS/GT present with similar clinical pain phenotype and demographics; however, taste was more intact in BMS/GT, suggesting that GT may be a contributing factor in the development of BMS through a mechanism that does not involve taste.