Palmoplantar pustulosis is strongly suggested the involvement of oral bacteria, but the cause of geographic tongue remains unknown. A 20-year-old female patient described a 1-2 year history of geographic tongue with irregular, smooth, red patches on parts of the tongue. She also presented several pustules, accompanied by delimited erythematous skin patches on both soles. One month after the first visit, when she returned for follow-up, the skin condition had progressed further, and pustules and scales became more prominent. Tongue rinses with commercial mouth washes were tried, but the condition of the lesions fluctuated between improvement and exacerbation. This report presents a rare case of the coexistence of geographic tongue and palmoplantar pustulosis in a young female patient.

Keywords: Geographic tongue, palmoplantar pustulosis, oral bacteria