Plasma Cell Gingivitis: An Unusual Entity- A Case Report

Abstract

Plasma cell gingivitis is an uncommon inflammatory condition marked by an extensive infiltration of plasma cells into the sub-epithelial connective tissue. Clinically, it is characterized by diffuse erythema and oedematous swelling of the gingiva, often sharply demarcated at the mucogingival junction. While this condition is frequently attributed to a hypersensitivity reaction to allergens, its exact aetiology remains ambiguous and poorly understood. Here, we present a rare and intriguing case of plasma cell gingivitis accompanied by distinctive features, including enlarged and fissured lips affecting the lower region and angular cheilitis—an unusual manifestation of this condition. Diagnosis was established through a combination of clinical examination and histopathologic evaluation. The treatment involved gingivectomy, which effectively managed the condition. This case adds to the growing body of knowledge about the clinical presentation and management of plasma cell gingivitis, particularly when associated with atypical findings like lip enlargement, angular cheilitis and fissuring.