T. ZuberbierW. AbererR. AseroA. H. Abdul LatiffD. BakerB. Ballmer-WeberJ. A. BernsteinC. Bindslev-JensenZ. BrzozaR. Buense BedrikowG. W. CanonicaM. K. ChurchT. CraigI. V. DanilychevaC. DresslerL. F. EnsinaA. Giménez-ArnauK. GodseM. GonçaloC. GrattanJ. HebertM. HideA. KaplanA. KappC. H. KatelarisE. KocatürkK. KulthananD. Larenas-LinnemannT. A. LeslieM. MagerlP. Mathelier-FusadeR. Y. MeshkovaM. MetzA. NastE. NettisH. Oude-ElberinkS. RosumeckS. S. SainiM. Sánchez-BorgesP. Schmid-GrendelmeierP. StaubachG. SussmanE. ToubiG. A. VenaC. VestergaardB. WediR. N. WernerZ. ZhaoM. MaurerHumanitas UniversitySaǧlik Bakanliǧi Okmeydani Eǧitim ve Araştirma HastanesiCHU de Québec - Université LavalState Research Center Institute of Immunology FMBAUniversidade de Coimbra, Faculdade de MedicinaThe Johns Hopkins Asthma and Allergy CenterHiroshima UniversityNHS Foundation TrustBnai-Zion Medical CenterSlaski Uniwersytet Medyczny w KatowicachCentro Medico Docente La TrinidadCharité – Universitätsmedizin BerlinUniversity of CincinnatiMedizinische Hochschule Hannover (MHH)Ârhus UniversitetshospitalMedical University of South CarolinaUniversitat Autònoma de BarcelonaUniversità degli Studi di BariUCLKlinikum der Johannes-Gutenberg-Universität und Fachbereich MedizinSyddansk UniversitetWestern Sydney UniversityUniversity of TorontoUniversidade Federal de Sao PauloPeking UniversityHopital TenonPenn State Health Milton S. Hershey Medical CenterFaculty of Medicine, Siriraj Hospital, Mahidol UniversityPantai Holdings Sdn BhdUniversity of GroningenUniversity Hospital Zurich, Dermatologische KlinikMedizinische Universität GrazSmolensk State Medical AcademyDr. D.Y. Patil Medical College, Navi MumbaiBaker Allergy Asthma Dermatology Research Center, LLCDermatology and Venereology Private PracticeSanta Casa de São Paulo School of Medical SciencesHospital Médica SurClinica San Carlo2019-08-232019-08-232018-07-01Allergy: European Journal of Allergy and Clinical Immunology. Vol.73, No.7 (2018), 1393-141413989995010545382-s2.0-85048001207https://repository.li.mahidol.ac.th/handle/20.500.14594/46000© 2018 EAACI and John Wiley and Sons A/S. Published by John Wiley and Sons Ltd. This evidence- and consensus-based guideline was developed following the methods recommended by Cochrane and the Grading of Recommendations Assessment, Development and Evaluation (GRADE) working group. The conference was held on 1 December 2016. It is a joint initiative of the Dermatology Section of the European Academy of Allergology and Clinical Immunology (EAACI), the EU-founded network of excellence, the Global Allergy and Asthma European Network (GA²LEN), the European Dermatology Forum (EDF) and the World Allergy Organization (WAO) with the participation of 48 delegates of 42 national and international societies. This guideline was acknowledged and accepted by the European Union of Medical Specialists (UEMS). Urticaria is a frequent, mast cell-driven disease, presenting with wheals, angioedema, or both. The lifetime prevalence for acute urticaria is approximately 20%. Chronic spontaneous urticaria and other chronic forms of urticaria are disabling, impair quality of life and affect performance at work and school. This guideline covers the definition and classification of urticaria, taking into account the recent progress in identifying its causes, eliciting factors and pathomechanisms. In addition, it outlines evidence-based diagnostic and therapeutic approaches for the different subtypes of urticaria.Mahidol UniversityImmunology and MicrobiologyMedicineArticleSCOPUS10.1111/all.13397