A 72-year-old woman received combination therapy with peginterferon alpha and ribavirin for treatment of chronic hepatitis C. Approximately 40 weeks after starting treatment, she developed an eruption in the left inner canthus and sarcoidosis was diagnosed after biopsy of the eruption. Combination therapy was discontinued, and further detailed examinations revealed bilateral hilar lymphadenopathy, uveitis, and complete atrioventricular block. A permanent cardiac pacemaker was implanted, and her sarcoidosis improved upon administration of corticosteroids.