[A focus on the diagnosis of early rheumatoid arthritis].

The need for early initiation of treatment in rheumatoid arthritis (RA) has been established. The 1987 RA classification criteria are not suitable for this strategy. Therefore, as a collaboration of ACR and EULAR, new classification criteria for RA were published in 2010. Several studies assessed agreement between 1987 and 2010 criteria and the potential source of discordance. This review will describe the current evidence evaluating the 2010 criteria, and show some important questions regarding the criteria.