What duration characterizes the hive reaction of Aquagenic Urticaria (AU)?
Answer
Hives caused by Aquagenic Urticaria typically last between 30 minutes and two hours.
Aquagenic Urticaria (AU) represents one of the exceedingly rare conditions where contact with water of any source triggers a systemic immune response, manifesting as an itchy, red hive reaction. This specific physical urticaria involves the development of visible welts upon water contact. According to medical literature regarding this condition, which has very few documented cases, the characteristic lifespan of these hives is relatively short, usually persisting for a duration ranging from half an hour up to a maximum of two hours. Furthermore, it is noted that the occurrence or severity of the AU reaction is independent of the water's temperature.
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