Oral lichen planus and chronic active hepatitis B: a salutary tale.

Oral lichen planus is occasionally associated with chronic active hepatitis or primary biliary cirrhosis. This paper describes a patient who presented with oral lichen planus and proved to have chronic active hepatitis, evidently related to hepatitis B virus infection. Oral lichen planus appears occasionally to be associated with systemic infection with hepatitis B or hepatitis C viruses, particularly in patients from southern Europe.