ABSTRACT
recently many authors have studied the association between hepatitis C virus [HCV] infection and Lichen planus. Most of these studies did show increased incidence of HCV infection among patient with Lichen planus, but some did not to study the association between hepatitis C virus infection [HCV] and Lichen planus in a group of our patients. seventy patients with lichen planus were tested for HCV antibodies and the results were compared to that of a healthy group of blood donors. three patients out of the 70 patients with Lichen planus were positive for antibodies to HCV in contrast 42 out of the 2000 persons in the control group were positive. our results showed that there is increased frequency of HCV infection among patients with Lichen planus