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Volume 25 , Issue 2
Spring 2011

Pages 131–140

Unexplained Somatic Comorbidities in Patients with Burning Mouth Syndrome: A Controlled Clinical Study

Michele D. Mignogna, MD, DMD/Annamaria Pollio, DMD/Giulio Fortuna, DMD/Stefania Leuci, DMD, PhD/Elvira Ruoppo, DMD, PhD/Daniela Adamo, DMD/Claudia Zarrelli, MD, DMD, PhD

PMID: 21528120

Aims: To evaluate the prevalence of unexplained extraoral symptoms in a group of patients with burning mouth syndrome (BMS) and compare the prevalence with that in patients with oral lichen planus (OLP) and age- and gender-matched controls. Methods: The occurrence of extraoral symptoms was analyzed in a group of 124 BMS patients, a group of 112 oral lichen planus (OLP) patients, and a group of 102 healthy patients. Oral symptoms were collected by a specialist in oral medicine and a general dentist, while data concerning unexplained extraoral symptoms were gathered by each specialist ward, ie, ophthalmology, gynecology, otolaryngology, gastroenterology, neurology, cardiology, internal medicine, and dermatology. A Fisher exact test (α = .05) and Kruskal–Wallis test (α = .05) were performed for statistical analysis. Results: In the BMS group, 98 (96.1%) patients reported unexplained extraoral symptoms, while 4 (3.9%) patients reported only oral symptoms. A painful symptomatology in different bodily regions was reported more frequently by BMS patients (83.3%) than by OLP patients (1.8%) and healthy patients (11.7%) (P < .0001). The differences in the overall unexplained extraoral symptoms between BMS (96.1%) and OLP patients (9.3%) (P < .0001) and between BMS (96.1%) and healthy patients (15.7%) (P < .0001) were statistically significant. The unexplained extraoral symptoms in BMS patients consisted of pain perceived in different bodily areas (odds ratio [OR]: 255; 95% confidence interval [CI]: 58.4–1112), ear-nose-throat symptoms (OR: 399.7; 95%CI: 89.2–1790), neurological symptoms (OR: 393; 95% CI: 23.8–6481), ophthalmological symptoms (OR: 232.3; 95% CI: 14.1–3823), gastrointestinal complaints (OR: 111.2; 95% CI: 42.2–293), skin/gland complaints (OR: 63.5; 95% CI: 3.8–1055), urogenital complaints (OR: 35; 95% CI: 12–101), and cardiopulmonary symptoms (OR: 19; 95% CI: 4.5–82). Conclusion: The great majority of BMS patients presented with several additional unexplained extraoral comorbidities, indicating that various medical disciplines should be involved in the BMS diagnostic process. Furthermore, the results suggest that BMS may be classified as a complex somatoform disorder rather than a neuropathic pain entity. J OROFAC PAIN 2011;25:131–140

Key words: BMS, burning mouth syndrome, extraoral symptoms, somatic comorbidities

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