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Chronic spontaneous urticaria

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Explore overview, symptoms, causes, treatment, diagnosis, prevention, and FAQ articles for this condition.

  • What is Chronic spontaneous urticaria

    Chronic spontaneous urticaria is a persistent disorder of the skin in which wheals, commonly called hives, appear repeatedly without a consistent external trigger and continue for at least six weeks. The condition arises from abnormal activation of the skin’s immune and…

  • Symptoms of Chronic spontaneous urticaria

    Chronic spontaneous urticaria causes recurrent itchy hives , often accompanied by episodes of swelling in the skin and, less commonly, deeper tissues. The symptoms arise when immune and vascular signals in the skin become unstable, allowing inflammatory mediators to be released…

  • Causes of Chronic spontaneous urticaria

    Chronic spontaneous urticaria develops when the skin repeatedly releases inflammatory mediators, especially histamine, without an obvious external trigger. The central event is inappropriate activation of mast cells and basophils in the skin, which causes transient wheals, swelling, and itching. In most…

  • Diagnosis of Chronic spontaneous urticaria

    Chronic spontaneous urticaria is diagnosed by combining clinical observation with targeted medical evaluation. It is defined by recurrent hives, with or without angioedema, that occur for six weeks or longer and arise without an obvious external trigger such as a specific…

  • Treatment for Chronic spontaneous urticaria

    What treatments are used for chronic spontaneous urticaria? The main treatments are second-generation H1 antihistamines, dose escalation of those antihistamines when needed, biologic therapy with omalizumab, and immunomodulatory treatment such as ciclosporin in selected cases. These therapies are used to suppress…

  • Prevention of Chronic spontaneous urticaria

    Chronic spontaneous urticaria, often abbreviated as CSU, is a condition in which hives and related swelling occur repeatedly for six weeks or longer without a consistent external trigger. In many cases, the condition cannot be fully prevented because it is driven…

  • FAQ about Chronic spontaneous urticaria

    Chronic spontaneous urticaria, often shortened to CSU, is a skin condition that causes recurring hives, swelling, or both, without a consistent external trigger. Because the symptoms can appear suddenly and then disappear, CSU often raises many questions about why it happens,…