11
Nov
How Long Do Drug Allergic Reactions Last. It should probably fade fairly quickly if it was a first time use reaction. Most of the time symptoms will appear between 1-2 hours after taking the drug unless you have a more rare delayed type reaction. Typically hives due to a medication will last for only a few days. My daughter has a sever peanut allergy.
Anaphylaxis is a sudden life-threatening whole-body reaction to a drug or other allergen. Typically hives due to a medication will last for only a few days. In some cases it could happen. Depends on the type of reaction. Healthcare providers cannot know ahead of time if you will have an allergic reaction. Toxic epidermal necrolysis can be life-threatening in up to half the cases.
The time varies from person to person.
My daughter has a sever peanut allergy. Swelling angioedema usually lasts 24-72 hours when it reaches maximum. My daughter has a sever peanut allergy. People with severe reactions may take a long time to get better especially if they are elderly or have other medical conditions. Symptoms of a drug allergy may start right after you take it. Some people may react right away while others might take the drug several times before they have an allergic reaction.