Differential diagnosis between urticarial vasculitis and chronic spontaneous urticaria: An international Delphi survey.

"CONFLICT OF INTEREST STATEMENT KK is or recently was an advisor for and/or received research funding from Berlin Chemie, Novartis and Takeda outside the submitted work. HB received honoraria (advisor, speaker) from AbbVie, Intercept Pharma, Novartis, Sanofi‐Aventis and Valenza Bio Inc. outside of the submitted work. JJT has no conflicts of interest to declare. RA has no conflicts of interest to declare. AMG Almirall, Amgen, AstraZeneca, Avene, Celldex, Escient Pharmaceuticals, Genentech, GSK, Instituto Carlos III‐ FEDER, Leo Pharma, Menarini, Novartis, Sanofi–Regeneron, Thermo Fisher Scientific, Uriach Pharma/Neucor. JC has no conflicts of interest to declare. CG Consultancies for Celltrion and Blueprint Medicine, advisory board for Sanofi. EK is or recently was a speaker and/or advisor for and/or has received research funding from Novartis, Menarini, LaRoche Posey, Sanofi, Bayer. UL has been an advisor, speaker or investigator (received grants and/or participated in clinical trials) for AbbVie, ALK‐Abéllo, CSL Behring, Leo Pharma, Meda Pharma, Novartis, Janssen‐Cilag, Sanofi–Regeneron and Shire/Takeda. MMa is or recently was a speaker and/or advisor for and/or has received research funding from Allakos, Allerdia, Amgen, Aralez, ArgenX, AstraZeneca, Celldex, Centogene, CSL Behring, FAES, Genentech, GIInnovation, Innate Pharma, Kyowa Kirin, Leo Pharma, Lilly, Menarini, Moxie, Novartis, Pfizer, Roche, Sanofi/Regeneron, Third HarmonicBio, UCB, and Uriach. MMe has no conflict of interest to declare. PS participated in advisory boards and/or lectures for Abbvie, Almirall, Allergika, Amgen, Beiersdorf, Biocryst, BMS, CSL, Janssen, Klinge, Leo, Lilly, L'Oreal, Novartis, Pfizer, Sanofi, Takeda, and UCB outside the scope of this work. MG participated in advisory boards and/or lectures for Abbvie, Astra‐Zeneca, Leo, Lilly, Novartis, Pfizer, Sanofi, and Takeda, outside the scope of this work. PK was a speaker/consultant for Novartis, ValenzaBio and Roche outside submitted work."

"We thank Jonathan Bernstein, Ravi Gutta, Sally Mahgoub Khalil, Désirée Larenas‐Linnemann, Anna Tagka, Silvia Mariel Ferrucci, Xenofon Aggelidis, Eduardo Magalhaes de Souza Lima, Melih Akyol, Maryam Al‐Nesf, Marysia T. Recto, Ramon M. Pujol, Young‐Min Ye, David Pesqué, Maria Staevska, Luis Felipe Ensina, Diluvio Laura, Maia Rukhadze, Ulrike Beiteke, Herberto Jose Chong‐Neto, Maia Gotua, Dorota Krasowska, Eli Mansour, Ramesha Bhat M, Paula Leiria‐Pinto, Martti Anton Antila, Torsten Zuberbier, Lea Kiefer, Songmei Geng, Frank Siebenhaar, Didier Ebo, Rosana Câmara Agondi, Claudio Alberto Salvador Parisi, Adam Reich, Elizabeth Garcia, Grzegorz Porebski, Bulent Enis Sekerel, Niall Conlon, Fragkiski Tsatsou, Tamar Kinaciyan, Maryam Khoshkhui, Alessandro Toscano, Jie Shen Fok, Todor A Popov, Faradiba Sarquis Serpa, Hermenio Lima, Frances Lawlor, Philip H Li, Peter Schmid, Heike Röckmann, Boccon‐gibod, Laurence Bouillet, Victoria Cardona, MarGuilarte, Connie Katelaris, Martijn van Doorn, Elena Kovzel, Sibel Doğan Günaydın, Isabel Rosmaninho, Andaç Salman, Michihiro Hide, Gabriela Dias, Amsler Emmanuelle, Alice Brehon, Aleksandra Dugonik, Jean‐Benoit Monfort, Iman Nasr, Ragıp Ertaş, Angèle Soria, Esen Özkaya, Cristina Surdu, Oscar Calderon Llosa, Demetrios Christou, Hector Ratti, José Laerte Boechat, Hasina Al Bahri, Joachim Fluhr, Chris Rutkowski, Alicja Kasperska‐Zajac, R Maximiliano Gómez, Michael Rudenko, Özlem Su Küçük, Roberta Fachini Jardim Criado, Thilo Jakob, Sabine Altrichter, Carolina Vera, Alexandr Vitchuk, Ramzy Mohammed Ali, Liangchun Wang, Leena Chularojanamontri, Elena Petkova, Karsten Weller, Zenon Brzoza, Mitja Košnik, Rabia Oztas Kara, Jacques Hébert, Kanokvalai Kulthanan, Gleison Duarte, Simon Francis Thomsen, George N Konstantinou, Dayanne Bruscky, Yuxiang Zhi, Muthu Sendhil Kumaran, Paulo Ricardo Criado, Zhiqiang Song, Tariq El‐Shanawany, Christian Vestergaard, Nelson Rosario Filho, Regis A Campos, Joachim Dissemond, Indrashis Podder, Vito Sabato, Anthony Bewley, Mark Lebwohl, Michael Makris, Elena Netchiporouk, Jonny Peter, Natasha Teovska Mitrevska, Gordana Lazarova, Lidija Biserkoska Atanasovska, Annick Barbaud, Nicola Wagner, Thomas Buttgereit and Mohamed Abuzakouk for their participation. This study benefitted from the network of Urticaria Centers of Reference and Excellence (UCAREs; https://ga2len‐ucare.com) of GA2LEN, the Global Allergy and Asthma Excellence Network. This Position Paper was supported by the European Academy of Allergy and Clinical Immunology (EAACI) under the EAACI Dermatology Section (2019)."