Association of psoriasis with benign migratory glossitis and fissured tongue in Chilean adults

Introduction: Benign migratory glossitis (BMG) and fissured tongue (FT) have been described as oral manifestations of psoriasis. Some authors even suggest their use as severity biomarkers for the disease. However, this association is controversial, and no studies have been conducted in Chile. The objective of this study was to analyze the association between psoriasis and BMG and/or FT in a sample of Chilean adults. Methodology: This case–control study included 39 individuals with psoriasis and 47 healthy controls selected by convenience sampling from patients treated at Hospital San José and the Dental Clinic of Andrés Bello University, Santiago. A team of dermatologists evaluated the presence, severity, and extent of psoriasis using the following indices: Psoriasis Area and Severity Index (PASI), Body Surface Area (BSA), Physician's Global Assessment (PGA), and Dermatology Life Quality Index (DLQI). A qualified oral pathologist assessed the oral mucosa and the presence of BMG/FT, also recording relevant demographic and habit variables. Results: No association was observed between the presence, severity, or extent of psoriasis and the presence of BMG or FT (p > 0.05). Conclusions: Our findings do not support the association between psoriasis and BMG and/or FT. Additionally, no relationship was observed between the severity/extent of psoriasis and these oral pathologies, casting doubt on their potential use as severity biomarkers for psoriasis in the Chilean population.