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Doctor insights on: What Might Make Someone Develop An Allergy To Shellfish Later In Life

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What might make someone develop an allergy to shellfish later in life?

What might make someone develop an allergy to shellfish later in life?

Unknown: Many people (at least half) develop shellfish allergy later in life. This probably reflects the way the immune system develops, as some allergies are more common in very young children than adults (like egg), while others develop later (like pollen, and shellfish). The exact mechanism is still unknown though. ...Read more

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Dr. John Chiu
2,586 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


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Can someone out grow an allergy to shellfish?

Can someone out grow an allergy to shellfish?

Not usually: Will i outgrow shellfish allergy? Shellfish allergy is usually developed later in life, and is usually a lifelong allergy http://www.Acaai.Org/allergist/allergies/types/food-allergies/types/pages/shellfish-allergy.Aspx. ...Read more

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Allergy to shellfish is caused by proteins?

Allergy to shellfish is caused by proteins?

Yes: Most allergens are proteins. A few are carbohydrates. Tropomyosin is one of the possible allergens in shrimp, for example. It is a muscle protein. ...Read more

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What can help my allergy to shellfish?

What can help my allergy to shellfish?

Avoid & epinephrine: No one can cure your shellfish allergy so staying away from it is the best course of action. Those allergic to crustaceans may not be allergic to mollusks & vice versa so you might be able to eat some shellfish. See your allergist for testing & advice. A reaction to shellfish can occur in minutes. Antihistamines work in an hour. Epipen (epinephrine) injected into your thigh can be life-saving. Where's yours? ...Read more

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How do I know if I have an allergy to shellfish?

How do I know if I have an allergy to shellfish?

Shellfish allergy.: If you have eaten any shellfish in the past, you will be more prone to develop allergy if you ingest it again. Mild symptoms mabye itching of the mouth with or without hives & swelling of the tongue , lips or skin. More severe symptoms witll be difficulty of breathing, wheezind, collapse. ...Read more

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How would I know if I have developed an allergy to shellfish?

How would I know if  I have developed an allergy to shellfish?

Many dogs few tricks: Many foods can trigger allergic reactions, even life-endangering anaphylaxis but those reactions have a limited number of symptoms - hives, lip, tongue & eyelid swelling, coughing, suffocation, nausea, abdominal pain, vomiting, diarrhea, a sense of something bad is happening, loss of consciousness & shock. If a some of these symptoms occur within 2 hours of eating shellfish allergy is possible. ...Read more

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I have a severe allergy to shellfish, but desperately wants to go to japan. What precautionary measures can I take?

No shellfish: Take your Epipen (epinephrine) everywhere you go to eat. Make sure you tell your servers you are very allergic and avoid any shared plates with shellfish on them. Get the word for all shellfish in japanese and spell them out to them so they know not to serve it to you. Be very careful. ...Read more

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If you have an allergy to fish does is increase your chances of having an allergy to shellfish or other seafoods?

If you have an allergy to fish does is increase your chances of having an allergy to shellfish or other seafoods?

Maybe a little: From an evolutionary point-of-view fish are closer to us than they are to crustaceans or mollusks. They share few similar proteins and so few similar allergens. Usually allergy to fish doe not mean allergy to shellfish. A few unfortunate people however are allergic to lots of foods. Hope that's not you. ...Read more

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I have a severe allergy to shellfish, so i'm afraid of other seafood. Any advice?

Get tested: Get tested for lots of shellfish and fish. You may be negative to seafood items you like and are afraid to eat. Then bring a sample of food you want to eat to the allergist's office and have a challenge to be sure it's safe to eat it. Be sure to mention your allergy to any restaurant where you eat, and carry your epipen (epinephrine). A cooking spoon may cross-contaminate a dish, so safest place to eat is home. ...Read more

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Red krill oil capsules: a part from me having an allergy to shellfish, what other bad things are in it?

Red krill oil capsules: a part from me having an allergy to shellfish, what other bad things are in it?

Krill oil: Krill oil seems to be safe for most adults when used for a short amount of time ( 3 months). Research on krill oil has not adequately evaluated its safety or possible side effects. It is likely that it can cause side effects similar to fish oil such as bad breath, heartburn, fishy taste, upset stomach, nausea, and loose stools. People who are allergic to seafood should avoid it. ...Read more

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Red krill oil capsules: apart from allergy to shellfish what other things in it that can cause a reaction?

Red krill oil capsules: apart from allergy to shellfish what other things in it that can cause a reaction?

Gelatin: Several products available, but most have: krill oil, omega-3 fatty acids, epa (eicosapentaenoic acid), dha (docosahaxaenoic acid), gelatin , glycerin , sorbitol , water , and vanillin. A small proportion of people are allergic to gelatin. The rest of those ingredients are not considered harmful or risky for persons with allergies. ...Read more

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Just found out I am mildly allergic to shellfish from an allergy test. I have eaten shellfish all my life with no problem. Can the allergy get worse?

Just found out I am mildly allergic to shellfish from an allergy test. I have eaten shellfish all my life with no problem. Can the allergy get worse?

Well,....: It's always possible, BUT I teach medical students that "we treat patients, not numbers." That is to say, if you have eaten shell fish all your life without any issues, I would not change your eating habits because of an allergy test. My brother was once tested for allergies and he came up positive for grass and was a landscaper at the time (and he did not quit his job)! Be well, best wishes. ...Read more

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If you eat a food your whole life like peanuts and shellfish with no trouble then stop for a long time, can you develop an anaphylactic allergy?

If you eat a food your whole life like peanuts and shellfish with no trouble then stop for a long time, can you develop an anaphylactic allergy?

Anaphylaxis: A person can develop an allergy at any point in time. It is possible, but unlikely, to develop an anaphylactic type reaction to a food previously tolerated. ...Read more

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Do I have a shellfish allergy? I'm 29 and have eaten shrimp (along with every other kind of shellfish you can image) my entire life with no problem. Recently i've begun cooking shrimp myself, and i've noticed that when i'm handling raw shrimp to peel an

Do I have a shellfish allergy? I'm 29 and have eaten shrimp (along with every other kind of shellfish you can image) my entire life with no problem. 

Recently i've begun cooking shrimp myself, and i've noticed that when i'm handling raw shrimp to peel an

You : You could have what is called contact urticaria, hives/swelling on contact with things including foods. This is likely allergy to a protein in the shellfish, either in the shell or the meat itself. Its possible you have allergy to dust mites which could be causing you symptoms on handling shells of raw shrimp but no reactions with eating cooked shrimp. Majority of allergic reactions to shellfish starts in "adult life", so this could be a start. Recommend that you talk to an allergist to test for allergy to shellfish and dust mites. Can this progress to a more generalized reaction, anaphylaxis, symptoms including vomiting, diarrhea, difficulty breathing cannot be predicted at this time. If testing is positive you may not need to consider eliminating eating shellfish. ...Read more

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