Cutaneous manifestations in patients with rheumatoid arthritis

Rheumatoid arthritis (RA) is a chronic inflammatory joint disease with different extra-articular manifestations. Among those extra-articular manifestations, there are significant cutaneous manifestations which may result in first admission to a dermatologist. In this article some specific and non-specific skin lesions of RA such as rheumatoid nodules, exacerbated nodules, rheumatoid vasculitis, Bywaters, pyoderma gangrenosum and neutrophilic rheumatoid dermatoses are discussed. Some of these lesions such as rheumatoid nodules are very common and some others are very rare.