RecruitingPhase 2Drug trialA 16-week Trial to Investigate the Efficacy and Safety of Delgocitinib Cream 20 mg/g in Adult Participants With Mild to Severe Palmoplantar PustulosisThe main objective of the study is to evaluate the efficacy of twice daily applications of delgocitinib cream 20 mg/g compared with cream vehicle in the treatment of adult participants with mild to severe palmoplantar pustulosis (PPP). Total study duration for each participants will be approximately 18 weeks, for an approximate total of 9 visits.