PICOS criteria for inclusion and exclusion of studies.

VAS scores and complication registration.

Summary of studies reporting co-occurrent pain symptoms in burning mouth syndrome (BMS) patients.

Somatosensory sensitivity in patients with burning mouth syndrome (BMS).

Characteristics of the orofacial pain patient group.

Evolution of burning mouth syndrome (BMS) diagnostic criteria.

Mann-Whitney U test, SCQ: Social Communication Questionnaire, FSIQ: IQ total, VIQ: verbal IQ, PIQ: performance IQ, A: ADOS-A (Autism Diagnostic Observation Schedule-A):...