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How Long Should A Rash From An Allergic Reaction Last. If you have an eczema flare-up it can last from several days to several weeks. Also hope bladder infection doesnt come back since I went off antibiotic after only 4 days. Although allergic reactions can be a nuisance and hamper your normal activities most are mild. How long does an allergic reaction last.
It can take two to six weeks for symptoms to appear after starting a new drug. How long does rash from allergic reaction to amoxicillin last How long does an allergic reaction rash to amoxicillin last How long does rash associated with miliaria last. Some patients have their rash for more than six days. The reason you have a rash is because your body overreacted to something it thought was dangerous. Most commonly a majority of people will have clear skin after about one to three weeks but a rash can last for over six weeks in more severe cases. Rashes from something you ingest typically last for just a few days or less.
It all depends on how badly your body reacts to an allergen.
However some can depict something serious. Severe allergic reactions irrespective of their source are mostly fatal and need urgent treatment. If your skin allergy is hives it can last a day or two. 30 years experience Pediatric Allergy and Asthma. Although allergic reactions can be a nuisance and hamper your normal activities most are mild. The reason you have a rash is because your body overreacted to something it thought was dangerous.