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how long does allergic reaction last

A 47-year-old member asked:
Dr. David Rosenthal
21 years experience Allergy and Immunology
No average allergy: Everyone's allergic reaction varies. There can be mild symptoms or severe symptoms. You can have continual exposure to the allergen (pollen for exam ... Read More

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A 23-year-old female asked:
Dr. Al Hegab
Dr. Al Hegab answered
40 years experience Allergy and Immunology
Depends: On the stimulus (allergen), the route, and the exposure duration, if ingested might take some time till eliminated, at any rate if it is minor as you ... Read More
A 35-year-old member asked:
Dr. Justin Greiwe
12 years experience Allergy and Immunology
Fairly quickly: Swelling after an allergic reaction usually resolves within 24 hrs of exposure. Swelling that persists for days is not likely IgE-mediated (allergic) ... Read More
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A 66-year-old male asked:
Dr. William Schmidt
A Verified Doctor answered
A US doctor answered Learn more
Always: Always
A 21-year-old male asked:
Dr. Gary Steven
30 years experience Pediatric Allergy and Asthma
It depends...: On the amount and duration of exposure. If you're allergic to dust mites and you fluff up a pillow on the way to the washing machine, probably 30 minu ... Read More
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A 23-year-old female asked:
Dr. Nayla Mumneh
29 years experience Allergy and Immunology
Depends: If you got in contact with a poisonous plant? It may last several days. Other items such as cosmetics, band aids etc, can last a few days to a week.
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A 37-year-old member asked:
Dr. Jeffrey Rosch
49 years experience Allergy and Immunology
Allergy duration: The duration of allergic symptoms are very variable. The type of reaction (ige vs. Igg), persistance of exposure, degree of sensitization, and comorbi ... Read More
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A 32-year-old member asked:
Dr. John Chiu
Dr. John Chiu answered
57 years experience Allergy and Immunology
Depends: One thing you need to consider is Lime Disease from a tick bite. Should consult a doctor promptly to confirm it so that you can get it treated. There ... Read More
A 30-year-old member asked:
Dr. Michael P Vaughn
34 years experience Allergy and Immunology
Allergic reactions: Food allergic reactions typically begin within 30 munutes of an ingestion and typically peak at about 30 minutes after they begin. The reaction may be ... Read More
A 19-year-old male asked:
Dr. John Chiu
Dr. John Chiu answered
57 years experience Allergy and Immunology
Depneds: If it is from a contact allergen, it may last many days. If it is from hives, then just hours.

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