Oral lichen planus (OLP) is a chronic inflammatory condition that affects the oral mucous membranes with a variety of clinical presentations, including reticular, atrophic (desquamative gingivitis) and ulcrative lesions. Treatment aims primarily to reduce the length and severity of symptomatic outbreaks. We report a case of OLP in 53 years old female patient with hypertension as underlying disease. The patient had been treated with nifedipine and reserpine for twelve years. Management of the patient included the application of 0.05% clobetasol propionate in a custom tray for erosive gingival lesions, nutritional supplementation, oral hygiene promotion and consultation to internal medicine specialist. The improvement of OLP requires a complete assessment of the medical status and elimination of local exacerbating factors. Systemic drug therapy is needed if OLP is suspected as the cause of oral lichenoid lesion. Changing to other drug regimes may also become necessary for improved immune status.