A Study to Evaluate the Safety and Efficacy of Ruxolitinib Cream in Participants With Prurigo Nodularis (PN)

The study comprises of a 12 week double-blind, vehicle-controlled (DBVC) treatment period, followed by a 40 week open label extension period, and 30 day safety follow-up period During the double blind period, all PN-affected areas identified at baseline will be treated, and during the open label period, only active PN-affected areas will be treated.