Rheumatoid neutrophilic dermatosis under treatment with the interleukin-6-receptor-antagonist sarilumab in a patient with seropositive rheumatoid arthritis

Skin manifestations may arise as adverse events following the use of novel drugs. We report a case of a patient with seropositive rheumatoid arthritis who developed a rheumatoid neutrophilic dermatosis (RND) under treatment with the interleukin-6-receptor-antagonist sarilumab. The skin lesions developed 2-3 days after the first injection. RND presents with asymptomatic, symmetrical fixed urticarial-like papules, plaques, and nodules, localized typically on the extensor surfaces of the forearms and hands. After discontinuing the medication, the nodules in our patient disappeared within a month.

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