“…For unknown reasons, the effect of ␣-IFN therapy for HCV infection in patients with LP differs markedly from case to case. ␣-IFN has been reported to have no influence (Pawlotsky et al, 1995a), to ameliorate (Doutre et al, 1992(Doutre et al, , 1996Strumia et al, 1993;Hildebrand et al, 1995;Pedersen, 1998;Nagao et al, 1999), or to trigger or worsen LP lesions, mainly in cases with oral involvement (Agner et al, 1992;d'Agay-Abensour et al, 1992;Cayla et al, 1993;Protzer et al, 1993;Sassigneux et al, 1993;Heintges et al, 1994;Papini et al, 1994;Perreard et al, 1994;Barreca et al, 1995;Fornaciari et al, 1995;Nunez et al, 1995;Areias et al, 1996;Nagao et al, 1996b;Schlesinger et al, 1997;Dalekos et al, 1998;Varela et al, 2000;Guijarro et al, 2001). The adjuvant use of ribavirin with ␣-IFN also seems to increase the risk of adverse cutaneous reactions, often of a lichenoid type (Sookoian et al, 1999;Manjón-Haces et al, 2001), whereas data on any effect on the oral mucosa are still lacking.…”