Top
10
Doctor insights on: What Is The Typical Length Of Time For An Allergic Reaction

Share
1

1
What is the typical length of time for an allergic reaction?

What is the typical length of time for an allergic reaction?

Depends.: An acute allergic reaction to a food, drug or insect sting begins in a few minutes & lasts 2 to 48 hours. Pollen, animal dander, dust mite & mold allergies begin in minutes but last as long as exposure continues. For example, ragweed allergy lasts for about a month. Acute contact dermatitis (poison oak/ivy) lasts 1-2 weeks; chronic (nickel) resolves only with removal of the offending agent. ...Read more

See 1 more doctor answer
Dr. John Chiu
2,491 doctors shared insights

Allergies (Definition)

Allergies occur when your immune system is triggered by envirionmental factors it should ignore--for example, pollen in the air, or dander on a cat or dog--and creates cells to fight against them. An allergic reaction typically causes itching, congestion, or drainage, and ...Read more


2

2
For what length of time can an allergic reaction in a child last?

For what length of time can an allergic reaction in a child last?

Allergic reaction: You do not specify the type of the allergic reaction. Acute ones are severe but do not last long, delayed reactions can last for a few days, you need to provide more specific symptoms for an accurate answer. ...Read more

4

4
If I have an allergic reaction only to undercooked shrimp, wouldn't i just be allergic to shrimp all the time?

If I have an allergic reaction only to undercooked shrimp, wouldn't i just be allergic to shrimp all the time?

Shrimp allergy: Many foods have multiple allergens some of which may be destroyed by cooking. Most of time people react to cooked shrimp but it is possible to only be allergic to the protein which are destroyed by cooking. However over time you could develop allergy to cooked shrimp as well. ...Read more

5

5
Is it normal to have a mild allergic reaction to shrimp if you haven't had it in a long time?

Is it normal to have a mild allergic reaction to shrimp if you haven't had it in a long time?

Only if allergic now: Seafood allergy can present at any time even after having tolerated the seafood many times before. Even after a long interval of not eating a particular food, it should be well tolerated unless that person has developed a new allergy. The initial reaction of a food allergy can be mild or severe and life threatening. An allergist can perform skin tests to assess if a shrimp allergy has occurred. ...Read more

6

6
How long does an allergic reaction take to kick in?

How long does an allergic reaction take to kick in?

Usually fast: Most common allergic reactions to pollen, insect stings, foods, etc., are immediate hypersensitivity reactions, meaning they occur within seconds to minutes. But you can also have a late phase, a second-wave of reaction that occurs hours later. Contact allergies (poison ivy, nickel allergy, e.g.) and some medication allergies are delayed, and may take hours, days, or weeks. ...Read more

7

7
How long will my topical allergic reaction last for?

How long will my topical allergic reaction last for?

Depends: The most important issue that determines how long it lasts is whether or not you have stopped contact with the allergen. Once you stop touching it, things should look better every day. But i would say that it should be resolved within a week to 10 days. (think of poison ivy...A common topical allergic reaction.). ...Read more

See 1 more doctor answer
8

8
How long does an allergic reaction on the face last?

How long does an allergic reaction on the face last?

Depends: Depends on the type of reaction. Swelling (angioedema) usually lasts 24-72 hours when it reaches maximum. Allergies can last for very long times if not treated. If unsure, the safest bet is to see your friendly allergist for advice and treatment. ...Read more

9

9
How long does an average allergic reaction last for?

How long does an average allergic reaction last for?

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 example) or acute exposure (like eating shellfish). The cause of the allergy, the severity of symptoms, and other factors all play into how long an allergic reaction occurs. ...Read more

10

10
How long should symptoms of an allergic reaction last?

How long should symptoms of an allergic reaction last?

Allergy duration: The duration of allergic symptoms are very variable. The type of reaction (ige vs. Igg), persistance of exposure, degree of sensitization, and comorbidities (other illnesses) can all affect the duration of symptoms. Therefore reactions can last from minutes to months. ...Read more

Dr. John Chiu
1,005 doctors shared insights

Allergic Reaction (Definition)

Allergic reactions are sensitivities to substances, called allergens, that come into contact with the skin, nose, eyes, respiratory tract, and gastrointestinal tract. They can be inhaled into the ...Read more