13 November 2025
PortalClinic home
Joint project with
BBVA Foundation website.This link opens in a new tab.
Causes of Chronic Urticaria
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There is a common tendency to associate urticaria with allergic reactions; however, in the case of chronic urticaria, this assumption is often incorrect. In fact, no clear external trigger can be identified in more than 50% of cases.
Recently, chronic urticaria has been linked to other factors.
Studies have shown that many forms of chronic urticaria have an autoimmune or autoreactive origin.
Thyroid disorders
Chronic infections
Certain genetic profiles
PortalClinic home
Joint project with
BBVA Foundation website.This link opens in a new tab.
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