ABSTRACT Objective To determine the prevalence of Burning mouth syndrome (BMS) in patients with Parkinson's disease (PD) and compare it with an age‐ and sex‐matched control group. Methods The study included 150 PD patients and 150 age‐ and sex‐matched control subjects. Participants were asked about any possible burning or tingling sensation in the oral mucosa. Those who responded positively underwent a clinical examination and blood analysis to help in diagnosing BMS. Results Prior to clinical examination, the prevalence of probable BMS was 6.7% (10/150) in PD patients and 2% (3/150) in the control group. After the clinical examination, 6 participants were excluded (3 from each group), resulting in a BMS prevalence of 4.7% in the PD group (7/150) and 0% in the control group (0/150). The difference in prevalence between the two groups was statistically significant ( p = 0.015). Patients reported that their BMS symptoms began either after or around the time of their PD diagnosis. Conclusions BMS is more prevalent in PD patients than in the general population, indicating a potential role of dopaminergic system dysfunction in BMS pathophysiology. The onset of BMS symptoms after or around the time of PD diagnosis suggests that BMS may be a secondary condition.