Hepatitis C infection can present with rheumatic manifestations indistinguishable from rheumatoid arthritis. The predominant clinical findings include palmar tenosynovitis: small joint synovitis, and carpal tunnel syndrome. Risk factors such as transfusions and IV drug abuse or a history of hepatitis or jaundice should be included in the history of present illness of any patient with acute or chronic polyarthritis or unexplained positive RF. In such patients, gammaglutamyl aminotransferase, serologic studies for hepatitis C, and other tests appropriate for chronic liver disease should be performed. - Journal of Rheumatology, June 1996;23(6):979-983; Rev Med Chil 1998 Jun;126(6):725-6.
