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Doctor insights on: What Does An Allergic Reaction To Shellfish Look Like

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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


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Why do I have a stronger allergic reaction to raw versus cooked shellfish?

Why do I have a stronger allergic reaction to raw versus cooked shellfish?

Shellfish allergy: The cooking process breaks down the allergenic proteins in the shellfish whereas the raw shellfish has 100% of the allergen when ingested. ...Read more

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Is my allergic reaction after exercising after seafood because of the exercise or seafood allergy?

Is my allergic reaction after exercising after seafood because of the exercise or seafood allergy?

Exercise induced: Food associated anaphylaxis is uncommon, but can happen. Wheat and shrimp are the most common culprits. Patients can eat the food without exercising, or exercise without eating the food and be fine. Be very careful to not eat shrimp within 4 hours of exercise and i would suggest not at all on exercise days. You should also see an allergist and have an Epipen (epinephrine) available. ...Read more

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Can I have developed an allergy to shrimp or is the seasoning the culprit? I have eaten seafood all my life including shrimp. I recently had some shrimp that i had an allergic reaction to. I beleive it was the seasoning i may have been allergic to.

Can I have developed an allergy to shrimp or is the seasoning the culprit? I have eaten seafood all my life including shrimp. I recently had some shrimp that i had an allergic reaction to. I beleive it was the seasoning i may have been allergic to.

Based : Based on your history of eating shrimp it is more likely the seasoning is the culprit. One other possibility is that the shrimp was spoiled. The only way to determine if you have a true allergy is to have a sensitivity test performed. ...Read more

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I am allergic to seafood but i can eat tunafish and breaded shrimp can I eat lobster and crab without having an allergic reaction?

I am allergic to seafood but i can eat tunafish and breaded shrimp can I eat lobster and crab without having an allergic reaction?

Difficult to answer: Seafood includes shellfish and fish. Shellfish includes mollusks and crustaceans. You describe being able to eat a sea dwelling fish (tuna) and a crustacean (shrimp). Therefore you are not allergic to seafood. Lobsters and crabs are crustaceans and share the same allergy inducing protein tropomyosin. It does not appear you are allergic to that or you would have had trouble with shrimp. ...Read more

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Which type of vitamins should I take for my age, women's one a day? Allergic to seafood, will vitamins with fish oil have cause an allergic reaction?

Which type of vitamins should I take for my age, women's one a day? Allergic to seafood, will vitamins with fish oil have cause an allergic reaction?

Not needed: Multivitamins have not been shown to improve health or longevity when studied scientifically. It would be better for you to follow a healthy and nutritious diet with a lot of veggies and fruits. ...Read more

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Can u developed an allergic reaction to shrimp? I've never been allergic to seafood. I had red/itchy bumps on my face.

Can u developed an allergic reaction to shrimp? I've never been allergic to seafood. I had red/itchy bumps on my face.

Yes: Yes, shrimp and other shellfish allergy can develop in adults and is actually quite common. If the red itchy bumps are appearing soon after ingesting shrimp defiantly could be allergy. Avoid shellfish for now and see allergist for confirmatory testing. ...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