Oral Involvement in Borderline Tuberculoid Leprosy: Report of a Case with Review of Literature.

Leprosy is a chronic infectious granulomatous disease caused by , primarily affecting the skin and the peripheral nerves. Variable involvement of internal organs and mucosa has been reported with incidence ranging from 19% to 60%, more commonly seen in lepromatous spectrum of leprosy (LL and BL). We report a case of borderline tuberculoid (BT) leprosy presenting with oral mucosal lesions involving the gingival mucosa and lower lip.