[Reactivation of hepatitis B in a patient with spondyloarthritis after the suspension of methotrexate and efficacy of treatment with antivirals in association to adalimumab].

We report the case of a male chronic hepatitis B virus (HBV) carrier with HLA-B27 spondyloarthrititis who developed fulminant hepatitis after discontinuation of methotrexate (MTX). Full recovery after therapy with lamivudine and adefovir allowed treatment with adalimumab which was well tolerated. Reactivation of hepatitis B after MTX withdrawal is a very rare complication, which can also occur in association with anti-TNF agents. In patients with positive serology for HBV prophylactic antiviral therapy is recommended.