Uncommon Coexistence of Localised Scleroderma and Actinic Cheilitis: A Case Report

ABSTRACT Aim Report the case of a patient with localised scleroderma, emphasising its clinical and histopathological characteristics to contribute to the identification of the disease and differential diagnosis with other systemic diseases. Case Report A 69‐year‐old male patient, melanoderma, with localised scleroderma, was referred for evaluation of a thick yellowish‐white plaque in the transition region between the vermillion border and mucosa of the lower lip. The diagnostic hypothesis was actinic cheilitis or localised scleroderma, and an incisional biopsy was performed. The histopathological diagnosis was scleroderma associated with actinic cheilitis. After a joint evaluation with a dermatologist, a conservative approach was chosen, using dexpanthenol 50 mg/g, three times a day, and lip balm with sun protection factor 50. The proposed treatment helped in the continuous hydration of the lip, partial regression of the lesion and stabilisation of its clinical condition. After 11 months of follow‐up, the patient is stable. Conclusions The diagnosis of scleroderma is a great challenge, so it is important that dental surgeons be familiar with this condition in order to consider localised scleroderma in the differential diagnosis of thick plaques for other reasons in the oral mucosa.