It is usually a selflimited, benign reaction, but can be chronic. First examines the biochemical mechanisms that lead to the development of urticaria and angioedema. Urticaria cronica, aguda tipos, causas, sintomas, tratamento. It can also be categorized ethiologically into allergic, spontaneous, physical or other types of urticaria. According to level of mast cell degranulation clinical signs are superficial urticaria or deep swelling angioedema. Urticaria is a disease that a fifth of the population shall suffer once in a lifetime. Esozia arroabarren jorge alvarez marta anda miriam palacios marta martinez ibone vaqueroesozia arroabarren, jorge alvarez, marta anda, miriam palacios, marta martinez, ibone vaquero. It is one of the most frequent dermatological conditions.
It can be divided into acute or chronic urticaria, depending on its clinical course. Based on its temporal evolution, urticaria is classi fied as acute less than 6 weeks or chronic more than 6 weeks. Classification is based on ga 2 leneaaciwaoedf guidelines 2009. First line treatment are non sedative antihistamines. Chavarriajimenez, martha graciela guerreromichaus, albina martinezperez. Urticaria involves intensely pruritic, raised wheals, with or without edema of the deeper cutis. Urticaria has diverse clinical presentations and causes. Recent clinical guidelines have proposed some fundamental changes in the diagnosis and treatment of urticaria, making the development of a national, multidisciplinary guideline, with wide. Urticaria is a disease defined by the eruption of hives on the skin. Esozia arroabarren jorge alvarez marta anda miriam palacios marta martinez ibone vaquero. These guidelines classify urticaria according to clinical manifestations. In children, infectious urticaria is the most frequent presentation. Chronic urticaria has been considered a skin disease of unknown origin, but recent data suggest that about 40% to 45% of patients have an autoimmune disorder with circulating immunoglobulin g igg. Physical urticaria, and autoimmune urticaria are the most common causes of chronic urticaria.
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