Fifty-Jour patients with oral lichen planus were studied over a three-year period. The important sites were the cheek mucosa, tongue and gingiva. The reticular pattern was the most common type. The professionals and the white collar workers formed the majority of the cases. Emotional disturbances was a predominant factor in this lesion. The rate of malignant change ranges from one to ten percent. Treatment included reassurance, good oral hygiene, avoidance of hot and spicy foods and topical corticosteroids.