Effectiveness of Dupilumab for an Elderly Patient with Prurigo Nodularis Who Was Refractory and Contradicted to Traditional Therapy.

Prurigo nodularis (PN) is an intense pruritic skin condition. Treatment of PN is challenging. We described an elderly patient with PN who had contradictions of cyclosporine or methotrexate and achieved significant improvement after treatment with dupilumab. We also reviewed published cases of elderly patients with PN who were refractory to traditional therapy.