Background: Lichen planus (LP) is a pruritic, inflammatory skin, mucous membrane, and hair follicle condition. It affects people of various ethnicities all over the world. 1.5 percent of men and 2.3 percent of women have oral LP. In some situations, it may be inherited. The goal of this study was to determine the prevalence of oral, skin, and both oral and skin lesions of LP in patients who visited a dental college's Department of Oral Medicine and Radiology.