title: Classification of urticaria.
abstract: Classification is based on GA(2)LEN/EAACI/WAO/EDF guidelines (2009). These guidelines classify urticaria according to clinical manifestations. Urticaria is mediated by mast cells. According to level of mast cell degranulation clinical signs are superficial (Urticaria) or deep swelling (Angioedema).
authors.affiliation: Allergie -Centrum -Charite, Charite University, Berlin, Germany.
authors.forename: Torsten
authors.initials: T
authors.lastname: Zuberbier
keywords: Angioedema; Physical urticaria; Spontaneous urticaria