RHEUMATOID NEUTROPHILIC DERMATITIS

Rheumatoid neutrophilic dermatitis (RND) is a rare cutaneous finding i n patients with severe rheumatoid arthritis or with high-titer rheumat oid factors, Most commonly, these lesions are erythematous papules or plaques distributed symmetrically on extensor surfaces, On histologic examination a dense dermal neutrophilic infiltrate without vasculitis is apparent. The pathogenesis of RND is unclear, and few treatments ar e known, With careful clinical and histologic examination, RND may be differentiated from the wide array of other cutaneous findings in rheu matoid arthritis.