Urticaria usually takes a few days

Urticaria is a common skin allergy disease, normally caused by food, drugs, inhalants and contact substances. As for urticaria, it usually takes a few days, which is closely related to whether the allergen is removed in time or whether it persists. If you eat shrimp or take a certain medicine to cause urticaria, if you stop using the allergic thing in time, mild urticaria will gradually subside and return to normal in about three to five days to a week. If you use anti-allergy drugs, it may disappear faster. However, if the allergen persists and the irritation persists, urticaria may persist. Over time, sometimes even if the allergen is removed, urticaria may persist for a while or even become chronic, which may last for weeks to months.