RecruitingPhase 3Drug trialA Study to Investigate the Pharmacokinetics and Safety of Dupilumab in Participants ≥6 Months to <18 Years of Age With Prurigo NodularisThis is a Phase 3, multicenter, open-label, pharmacokinetics (PK)/safety study. The study consists of 3 periods: * Screening period: 2 to 4 weeks. * Treatment period: 24 weeks. * Post-intervention follow-up period: 16 weeks. The study duration will be approximately 42 to 44 weeks for each participant (including screening, treatment, and follow-up periods). The total number of planned study visits for each participant will be 6.