Conflicts of interest Dr Yeung has been an advisor, consultant, speaker, or investigator for AbbVie, Allergan, Amgen, Arcutis, Astellas, Bausch Health, Boehringer Ingelheim, Bristol-Myers Squibb, Celgene, Centocor, Coherus, Dermavant, Dermira, Forward, Galderma, GlaxoSmithKline, Incyte, Janssen, Kyowa, LEO Pharma, Lilly, Medimmune, Merck, Novartis, Pfizer, Regeneron, Roche, Sandoz, Sanofi Genzyme, Sun Pharma, Takeda, UCB, Valeant (Bausch Health), and Xenon. Dr Gooderham has been an investigator, speaker, or advisor for AbbVie, Amgen, Akros, Arcutis, Bausch Health, Boehringer Ingelheim, Bristol-Myers Squibb, Celgene, Dermira, Dermavant, Eli Lilly, Galderma, GlaxoSmithKline, Incyte, Janssen, Kyowa Kirin, LEO Pharma, MedImmune, Merck, Novartis, Pfizer, Regeneron, Roche, Sanofi Genzyme, Sun Pharma, and UCB. Dr Hong has been an investigator or has received honoraria for advisory board, speaker, and consultant services from AbbVie, Amgen, Bausch Health, Celgene, Dermavant, Eli Lilly, Galderma, GlaxoSmithKline, Janssen, LEO Pharma, Novartis, Pfizer, Regeneron/Sanofi, Sun Pharma, and UCB; and has received research grants for investigator services from AbbVie, Akros, Amgen, Arcutis, Boehringer-Ingelheim, Bristol-Myers Squibb, Celgene, Cutanea, Dermira, Dermavant, DS Biopharma, Eli Lilly, Galderma, GlaxoSmithKline, Janssen, LEO Pharma, Medimmune, Novartis, Pfizer, Regeneron/Sanofi, Roche, and UCB. Dr Lynde has been a speaker or consultant and principal investigator for AbbVie, Altius, Amgen, Aralez, Arcutis, Bausch Health, Bayer, Boehringer Ingelheim, Bristol Myers Squibb, Celgene, Cipher, Dermavant, Eli Lilly, Fresnius Kabi, GlaxoSmithKline, Innovaderm, Intega Skin, Janssen, Kyowa, La Roche Posay, LEO Pharma, L'Oreal, Medexus, Merck, Procter & Gamble, Pediapharm, Regeneron, Roche, Sanofi Genzyme, Sentrex, TEVA, Tribute, UCB, Valeant, Viatris, and Volo Health. Dr Prajapati served as an investigator for AbbVie, Amgen, Arcutis, Arena, Asana, Bausch Health, Boehringer Ingelheim, Bristol-Myers Squibb, Celgene, Concert, Dermavant, Dermira, Eli Lilly, Galderma, Incyte, Janssen, LEO Pharma, Nimbus Lakshmi, Novartis, Pfizer, Regeneron, Reistone, Sanofi Genzyme, UCB, and Valeant; and as a consultant, advisor, or speaker for AbbVie, Actelion, Amgen, Aralez, Arcutis, Aspen, Bausch Health, Boehringer Ingelheim, Bristol-Myers Squibb, Celgene, Cipher, Eli Lilly, Galderma, GlaxoSmithKline, Homeocan, Incyte, Janssen, LEO Pharma, L'Oreal, Medexus, Novartis, Pediapharm, Pfizer, Sanofi Genzyme, Sun Pharma, Tribute, UCB, and Valeant. Dr Lansang is or has been an investigator, consultant, speaker, or advisor for AbbVie, Amgen, Bausch, Bristol-Myers, Celgene, Galderma, Janssen, LEO Pharma, Eli Lilly, Novartis, Pfizer, Sandoz, Sanofi, Sun Pharma, and UCB. Dr Turchin served as consultant, speaker, or investigator for AbbVie, Amgen, Arcutis, Aristea, Bausch Health, Boehringer Ingelheim, Bristol-Myers Squibb, Celgene, Eli Lilly, Galderma, Incyte, Janssen, Kiniksa, LEO Pharma, Mallinckrodt, Novartis, Pfizer, Sanofi, Sun Pharma, and UCB. Dr Wiseman received honoraria for presentations from AbbVie, Bausch Health, Eli Lilly, Galderma, Janssen, LEO Pharma, Novartis, Pfizer, Sanofi Genzyme, Sun Pharma, and UCB; and for participation to advisory boards from AbbVie, Amgen, Arcutis, Bausch Health, Boehringer Ingelheim International, Bristol Myers Squibb, Celgene, Eli Lilly, Galderma, GlaxoSmithKline, Janssen, LEO Pharma, L'Oreal, Lyceum, Novartis, Pfizer, Sanofi Genzyme, Sun Pharma, and UCB. Dr Jack received grants, contracts, consulting fees, payment or honoraria, or participated on data safety monitoring or advisory board from AbbVie, Amgen, AntibioTx, Arcutis, Asana, Bausch, Boston, Boehringer Ingelheim, Bristol Myers Squibb, Canadian Dermatology Foundation, Cara, Celgene, Concert, Dermavant, Eczema Society of Canada, Eli Lilly, Innovaderm Research, Incyte, Janssen, Kiniksa, LEO Pharma, McGill University Department of Medicine, MITACS, Neokera, Novartis, Pfizer, Ralexar, Sanofi, Sienna, Target PharmaSolutions, Valeant, and UCB. Dr Ramien has consulted for AbbVie, Eli Lilly, LEO Pharma, Pfizer, and Sanofi; and has a registered study with Sanofi. Dr Purdy received payment, honoraria, or participated in advisory boards from AbbVie, Amgen, Arcutis, Bausch, Boehringer Ingelheim, BMS, Eli Lilly, Galderma, Janssen, Johnson & Johnson, LEO Pharma, Pfizer, Sun Pharma, Sanofi, and UCB; and occupied leadership or fiduciary roles in CDA executive and the Eczema Society. Dr Grewal is or has been an investigator, consultant, speaker, advisor for or received research funding or honoraria from AbbVie, Aralez, Amgen, Arcutis, Bausch Health, Boehringer Ingelheim, Bristol Myers Squibb, Celgene, Cipher, Dermira, Dermtek, Eli Lilly, Galderma, GlaxoSmithKline, Incyte, Johnson & Johnson/Janssen, LEO Pharma, Merck, Novartis, Pfizer, Regeneron, Sanofi, Stiefel, Sun Pharma, Tribute Pharmaceuticals, Takeda, and Vitae.