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Doctor insights on: Seafood Allergy

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What causes crab allergies? Shrimp allergy?

What causes crab allergies? Shrimp allergy?

Muscle protein: The allergen in shrimp and crab is probably a common allergen called tropomyosin which is a muscle protein. ...Read more

Dr. John Chiu
2,660 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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Real lobster allergy?

Real lobster allergy?

Yes: Lobster is related to shrimp and crab. Each of these is a common cause of life threatening allergy. If you are having symptoms after eating any of these you should be evaluated by a board certified allergist. Do no eat any shellfish until you have been cleared. ...Read more

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Safe fruits/foods for airborne nut allergies?

Safe fruits/foods for airborne nut allergies?

Nuts cautioned,: It is believed that one is likely allergic to most nuts when a definite allergy to one nut has been documented. However this is not always true since some people may be allergic to just one nut and not the others. You need to consult an allergist to sort this out since a serious reaction to airborne nuts (including peanut which is actually a bean) has rarely been noted outside of workplace. ...Read more

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Will calamari trigger a shellfish allergy?

Will calamari trigger a shellfish allergy?

Yes: About 10-15% of people who are shellfish allergic (shrimp, lobster, etc) are also clinically sensitive to mollusks (clams, squid(calamari), octopus). Ask your allergist before introducing mollusks to your diet. ...Read more

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Looking for nut allergies symptoms, eg, cashew allergy?

Looking for nut allergies symptoms, eg, cashew allergy?

Varies: Allergic reactions varies with individuals.Some can consume cashews, while to others they are toxic.Reactions can be mild or severe. Mild reactions include nausea , vomiting, diarrhea. Skin rash and itching on the skin.The eyes , roof of mouth and throat may itch.Severe reactions include difficulty breathing, swelling to face and throat.The most dangerous is anaphylaxis.This can be fatal ...Read more

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Allergic reaction to corned beef?

Allergic reaction to corned beef?

Beef allergy: Are you allergic to beef or is it simply something in the aging process of the corned beef that you reacted to? Your allergist can test you. ...Read more

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Will imitation crab trigger a shellfish allergy?

Will imitation crab trigger a shellfish allergy?

No: Imitation crab meat is made from fillets of Alaska pollock. As long as you don't have a history of fish allergy you shouldn't have a problem. You should be careful however, because some manufacturers that produce these products also manufacture shellfish products in the same facility which could cause cross-contamination. ...Read more

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Shellfish allergy. Can I eat mussels?

Shellfish allergy. Can I eat mussels?

Maybe: Shellfish includes clams, oysters, lobster, crabs, shrimp, mussels, etc.... Some people are allergic to all shellfish. Some are allergic to only specific types and tolerate other shellfish. See an allergist for testing. Don't be foolish and take a chance. ...Read more

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Shellfish / crustacean allergy testing safe? Costly?

Shellfish / crustacean allergy testing safe? Costly?

Consider: There are such tests, such as rast testing (radioallergosorbent testing), cost varries by lab and your insurer (if you have). ...Read more

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How can seafoods like lobster, crab and squid cause food allergies?

How can seafoods like lobster, crab and squid cause food allergies?

If you are sensitive: If you are sensitive to the proteins in these foods, your body makes antibodies that recognize them and set off an allergic reaction. Most foods have the potential of causing allergies, but a few are more likely and shellfish are among the 8 most common food allergens. ...Read more

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Chinese food triggering someone's cashew allergy?

Chinese food triggering someone's cashew allergy?

Possible: Some chinese dishes contain cashews. The other possibility is that there was cashew "contamination" in your dish. ...Read more

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What chemical in shellfish makes people allergic to eating shellfish?

What chemical in shellfish makes people allergic to eating shellfish?

Fish protein allergy: Most allergens are proteins, and the allergens in shellfish that set off allergic people are no exception. These are usually unique to the particular species of fish, but some cross-reactivity is possible. In the case of shrimp, the protein has been identified and it is called tropomyosin. http://www.nytimes.com/1993/12/28/health/studies-unmask-protein-culprit-behind-allergy-to-shrimp.html. ...Read more

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Peanut vs hazelnut allergy--same cause?

Peanut vs hazelnut allergy--same cause?

Nuts are different: Peanuts and hazelnuts are not the same. Peanuts are a legume and hazelnuts are tree nuts. If you are allergic to one, you will not necessarily be allergic to the other, but if you have several food allergies involving nuts, hazelnut and peanut should both be part of your skin test or blood test evaluation ...Read more

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What is the best allergy medication for seasonal allergies like pollen, dust, ragweed, hay fever, dogs, cats, hamsters etc?

What is the best allergy medication for seasonal allergies like pollen, dust, ragweed, hay fever, dogs, cats, hamsters etc?

There are a few: Not one medicine is better than another....Everyone's system is different...Some people get better with allegra..Others with zyrtec..Others with Claritin or even benadryl (diphenhydramine). These are now over-the-counter...Try some and read the labels. If you don't feel better, see a board certified allergist (www.Acaai.Org). Good luck. ...Read more

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Dr. Al Hegab Dr. Hegab
2 doctors agreed:
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Are allergy vaccines helpful in allergic dermatitis?

Dr. Al Hegab Dr. Hegab
2 doctors agreed:
Are allergy vaccines helpful in allergic dermatitis?

Probably: Not as strongly effective as with airways allergies, need to be prescribed and monitored by an expert, an allergist, in selected patients, after controlling the environment and trial of other modalities, and control of symptoms, good luck ...Read more

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If someone has shellfish allergies, are they allergic to all seafood?

If someone has shellfish allergies, are they allergic to all seafood?

Not necessarily: but better be cautious, sea food mix would contain shellfish, also shellfish might be cooked in the same pan and contaminates other fish meat, please see an allergist for testing and follow up, meanwhile keep an Epipen (epinephrine) and antihistaminic tablets handy for any accidental exposure, good luck ...Read more

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Can environmental allergies (food, pollen, dust mites, contrast dye, penicillin) cause a high positive ANA?

Can environmental allergies (food, pollen, dust mites, contrast dye, penicillin) cause a high positive ANA?

I have seen this: While the +ANA is suggestive of SLE there can be other causes - other connective tissue disease, autoimmune thyroid disease, auto immune hepatitis to name some. I have seen a lot of people with + ANAs who only have as another problem a history of allergic reactions and I am convinced that thee allergic reactions can cause a + ANA. Everyone can have very low titters (amount) of ANA. ...Read more

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Do hives from food allergies always mean anaphylactic reaction?

Do hives from food allergies always mean anaphylactic reaction?

Not always: Hives as a symptom along the continuium of allergic reactions. The concern is that the next time they are exposed to this allergen they may react more severely (anaphylaxis). This is definitely something you want to see your child's doctor about. ...Read more

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