[Rheumatoid neutrophilic dermatitis--a rare dermatosis in patients with active rheumatoid arthritis]

Rheumatoid neutrophilic dermatitis is a rare dermatologic disorder seen in patients with active rheumatoid arthritis. Clinically firm erythematous 3-5 mm papules are found mainly on the arms, the hips and the proximal thighs. The lesions may be pruritic leading to excoriations and crusts. Histology reveals a dense dermal infiltrate with neutrophilic granulocytes, while leukocytoclasia may be seen, vasculitits is not observed. This overview of rheumatoid neutrophilic dermatitis may help remind the practitioner to include this uncommon disorder in the differential diagnosis of rheumatoid arthritis-related dermatoses.