Efficacy and safety of nemolizumab and topical corticosteroids for prurigo nodularis: Results from a randomised, double-blind, placebo-controlled, phase II/III clinical study in patients aged ≥13 years. Prurigo nodularis, a chronic inflammatory skin condition, adversely affects the quality of life of affected individuals. Current treatment options for prurigo nodularis in Japan are limited . To evaluate the optimal dose, efficacy, and safety of long-term treatment with nemolizumab in patients with prurigo nodularis in Japan. In a 16-week, double-blind, phase II/III study, patients aged ≥13 years with prurigo nodularis were randomly assigned (1:1:1) to nemolizumab 30 mg, 60 mg, or placebo groups, with concomitant topical corticosteroids, every 4 weeks. The primary efficacy end point