Adult-onset Still's disease (AOSD) is a rare clinical entity withunknown etiology, characterized by arthritis, fever, evanescentrash and other systemic presentations. This report described a45-year-old male who presented with sore throat, fever, arthritis,evanescent rash, raised liver enzymes and hyperferritinemia. Hewas diagnosed to have AOSD based on Yamuguchi criteria afterthe exclusion of other potential diagnoses. The patient partiallyresponded to combined celecoxib and prednisolone. He was alsoprescribed methotrexate and his symptoms improved.