Effective response to upadacitinib in patients affected by prurigo nodularis and by atopic dermatitis with a predominant prurigo nodularis pattern: A multicenter case series study.

Competing Interests: Conflicts of interest Dr Pezzolo has been consultant and speaker for Sanofi Genzyme, AbbVie, Leo Pharma, Novartis, Janssen, Almirall, Pfizer, Galderma, and Boehringer Ingelheim. Dr Narcisi has served on advisory boards, received honoraria for lectures and research grants from Almirall, AbbVie, Leo Pharma, Celgene, Eli Lilly, Janssen, Novartis, Sanofi Genzyme, Amgen, and Boehringer Ingelheim. Dr Gargiulo has served on advisory boards and received honoraria for lectures from Almirall, Pfizer, and UCB. Dr Di Lernia has been an adviser for AbbVie, Almirall, Amgen, and Janssen, is a consultant for AbbVie and Novartis, and has been a principal investigator for Almirall, Celgene, Eli Lilly, Janssen, Novartis, Pfizer, and Sanofi. Dr Napolitano acted as a speaker or consultant for AbbVie, Amgen, Pfizer, Eli Lilly, Sanofi, and Leo Pharma. Dr Patruno acted as a speaker or consultant for AbbVie, Eli Lilly, Leo Pharma, Novartis, and Sanofi. Drs Ribero and Ortoncelli have received research and travel grant from AbbVie, Almirall, Eli Lilly, Leo Pharma, Novartis Pfizer, and Sanofi. Dr Ferrucci has served as speaker, principal investigator, or member of advisory boards for AbbVie, Amgen, Galderma, Eli Lilly, Pfizer, Leo Pharma, Novartis, Menarini, Sanofi Regeneron, and Almirall. Dr Russo acted as speaker and consultant for Novartis, Sanofi, Leo Pharma, and AbbVie, outside the submitted work. Dr Naldi has been consultant and speaker for AbbVie, Almirall, Bristol Myers Squibb, Janssen, Leo Pharma, Novartis, and Sanofi Genzyme. Drs Foti, Romita, Gurioli, Schena, Barei, and Amoruso have no conflicts of interest to declare.