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It cannot be prevented but it can be cured. And a lot can be done to keep it from getting worse. Few tests are needed for a diagnosis. While the therapy involves biologics if antihistamines do not work.
Living (well) with urticaria: how to recognize it, treat it and relieve itching
The point on urticaria in the interview by actress Vittoria Belvedere with Silvia Ferrucci, head of the allergological and professional dermatology service of the IRCCS Ca ‘Granda Foundation of the Ospedale Maggiore Policlinico Milano