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Hives can appear and disappear quickly, with each hive only lasting around 2–3 hours. However, depending on the cause, they may reappear and continue affecting someone for days, weeks, or...
Hives tend to fade within 24 hours, although they may be noticeable for several days or longer. Acute urticaria refers to hives that don’t last very long (less than six weeks). Chronic urticaria refers to hives that happen at least twice a week for more than six weeks.
They normally fade within 24-48 hours, although some cases of acute hives can last for several weeks. You may notice that individual weals seem to fade after an hour or less, but new ones may appear in other places - giving you the impression that the rash is moving around your body.
Most of the hives appear minutes to and hour after being exposed to the trigger. In many cases, the hives will get better within a few hours but can last longer in some people....
Most cases of hives resolve within 48 hours, but some people can experience chronic hives, which last more than six weeks. Manage hives with at-home remedies like cold compresses, calamine lotion, and OTC antihistamines.
Short-lived (acute) hives and angioedema are common. Most times, they are harmless, clear up within in a day and don't leave any lasting marks, even without treatment. Hives that last longer than six weeks are called chronic hives. Hives and angioedema are usually treated with antihistamine medication.
Each hive usually lasts for 24 hours. However, you may get new ones as older ones fade. A minor case of hives can last for a few days. An acute case of hives may persist for about six weeks....
In most cases, hives appear suddenly and disappear within several hours. Hives usually respond well to treatment, which includes medicines and avoiding whatever triggered the hives. More detailed information about hives is available by subscription. (See 'Professional level information' below.)
A hives outbreak can last anywhere from several hours to up to a week or two. If the hives are the result of an allergic reaction, they may last longer and require medical treatment.
How long do hives usually last? An individual hive tends to go away within 24 hours, but new hives can appear. For most people, a case of hives usually lasts a few days to a few weeks. A case of hives can also last longer than a few weeks. If you continue to get hives for 6 weeks or longer, you have chronic hives.