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[Urticaria and angioedema. Review].

This is a review of the most relevant concepts on urticaria and angioedema, from their incidence and classification, to their pathogenia, hereditary, idiopathic factors, X-rays needs to reach a diagnosis and general therapeutic measures. The reviewing authors make note that the most important tools for the diagnosis of patients with urticaria and angioedema is the clinical history, with particular insistence on the causing factors here noted.