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How Long Does Hives From An Allergic Reaction Last. The reaction can also cause these serious skin reactions. Acute hives Most cases of hives last no longer than six weeks. Sulfonamide drug hypersensitivity syndrome. Chronic or persistent hives are hives that last for more than 6 weeks but they normally last between 6 and 12 months sometimes longer according to the British Association of Dermatologists.
Of course we are talking about the cases of chronic hives that can come and go as they please for several months. Beside above what does an antibiotic rash look like. Typically hives due to a medication will last for only a few days. Gary Steven answered 30 years experience Pediatric Allergy and Asthma Less than one week. Identifying what triggered your rash is crucial. Usually this type of hives is caused by food or drug reactions.
Hives often resolve on their own especially in children.
Acute hives often occur as a result of an allergic reaction to something like food or medication though they can be caused by other things as well. It might take from a couple of hours to a couple of days or weeks. Acute hives Most cases of hives last no longer than six weeks. Chronic or persistent hives are hives that last for more than 6 weeks but they normally last between 6 and 12 months sometimes longer according to the British Association of Dermatologists. Depends on the type of reaction. Most hives do last up to 36 hours and are easily treatable with antihistamines and other home remedies.