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Doctor insights on: I Have Fish Allergies Does This Mean That I Am Also Allergic To Frogs

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I have fish allergies. Does this mean that I am also allergic to frogs?

I have fish allergies. Does this mean that I am also allergic to frogs?

No: An allergy to fish may not be to all fish. Since frogs are very different than fish, they have many different proteins. It is perfectly possible that you will not be allergic to both fish and frogs because of a common allergen. But, you could be allergic to one thing in fish and another in frogs, for example. ...Read more

Dr. John Chiu
2,629 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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What do you meant by fish allergy?

What do you meant by fish allergy?

Bony fish allergy: Main familes of seafood: bony fish (cod), bivalves (clam), crustaceans (crab), cephalopods (squid), gastropods (snail), with cross-reactivity within a family but rarely between families. Main symptoms: itchy/swollen lips/mouth/throat, nausea/vomiting, abdominal cramps, diarrhea, red/itchy skin, hives, runny/stuffy nose, chest tightness/wheezing, shortness of breath. Reactions occur within 1/2-2 hr. ...Read more

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If I'm allergic to fish, can I eat frog?

If I'm allergic to fish, can I eat frog?

Probably: If you have safely eaten frog in the past then you can eat it, no matter what other things you are allergic to. If you have avoided it due to being allergic to fish, the risk should be low. They are different, one is a fish and one is an amphibian. ...Read more

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Does having a shrimp allergy automatically make you allergic to all shell fish?

Does having a shrimp allergy automatically make you allergic to all shell fish?

Caution: The allergen for shrimp allergy is a muscle protein. It is a common allergen in all the shellfish. Given that shellfish allergy can kill, one should be very prudent and cautious about this allergy. A safe general recommendation is if allergic to one shellfish one should avoid all shellfish. ...Read more

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I know anyone can be allergic to anything at any time, but what really is the likelihood that an adult w/no prev allergy will react to peanut or fish?

I know anyone can be allergic to anything at any time, but what really is the likelihood that an adult w/no prev allergy will react to peanut or fish?

Not high: Incidence of food allergy among adults hovers below 1% in the general population. I would not be too concerned about something that is unlikely to occur. ...Read more

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Is it possible to be allergic to fish oil if you have a fish allergy?

Is it possible to be allergic to fish oil if you have a fish allergy?

Possible: I would avoid if you have fish allergy. It may be specific protein of specific fish. If it is imperative you take fish oil, would make a visit to allergy/immunologist to see what options are. ...Read more

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Is it possible to be allergic to fish oil although I'm not aware of having a fish allergy?

Is it possible to be allergic to fish oil although I'm not aware of having a fish allergy?

Not likely: A true allergy highly unlikely because fish oil contains only trace amounts of proteins you are eating when having fish and that can cause severe allergies. ...Read more

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I have a mild fish allergy. Would it be safe for me to take krill oil? Should I be worried about fish contaminants? I am not allergic to shell fish.

I have a mild fish allergy. Would it be safe for me to take krill oil? Should I be worried about fish contaminants? I am not allergic to shell fish.

See an allergist: Not sure what a mild allergy is, you can either develop an allergic reaction from fish or not and you should not risk an anaphylactic reaction if you are truly allergic. Best is to consult an allergist for proper advice about your fish allergy. ...Read more

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I hear so much abt allergic reactions that I've started avoiding peanuts, fish, etc, even tho I have no food allergies. Overreacting?

I hear so much abt allergic reactions that I've started avoiding peanuts, fish, etc, even tho I have no food allergies. Overreacting?

Yes: The guidelines that are published for evaluation and treatment of food allergies do not recommend testing without a prior reaction/symptoms after eating. If you have never had any problems with a specific food, avoiding them proactively would be unneccessary. I do admire your desire to be proactive though. ...Read more

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Just had allergy testing and am allergic to soy, wheat, beef, fish, cows millk, eggs. What can I eat?

Context: Significance of your test results need to take into account what symptoms you have when eating these foods. If you indeed cannot eat these foods, consider chicken, pork, venison, vegetables, fruits. ...Read more

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Allergy test came back highly allergic to all dairy, all wheat, gluten, all yeast, rice, eggs, some fish. Could anything else be wrong? Why so much?

Allergy test came back highly allergic to all dairy, all wheat, gluten, all yeast, rice, eggs, some fish. Could anything else be wrong? Why so much?

Doubtful results: I wonder if you had your test with a board certified allergist, or was it a random blood test you had with another practitioner. It is unlikely for an adult to be allergic to all these items and I stronly doubt the accuracy of these results. I suggest you consult a board certified allergist to discuss your symptoms and determine the indication for specific testing. ...Read more

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I've never had food allergies & tested neg for them, but do have eczema & chronic hives. Does this mean i'll react to big allergens like nuts & fish?

I've never had food allergies & tested neg for them, but do have eczema & chronic hives. Does this mean i'll react to big allergens like nuts & fish?

Not necessarily: In fact, your own experience with eating nuts and fish is a much more reliable indicator of whether you're actually allergic than the results of skin testing will be. I think your allergist will tell you the same thing. The best way to determine whether your skin issues are due to allergy is a few weeks' trial of an elimination diet. Ask about it. ...Read more

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I have a severe allergy to shell fish. My doc just prescribed keflex, because I am allergic to penicillin, too. I took a benadryl, (diphenhydramine)?

I have a severe allergy to shell fish. My doc just prescribed keflex, because I am allergic to penicillin, too. I took a benadryl, (diphenhydramine)?

See detail: Being allergic to shellfish and being allergic to antibiotics are two different things. They are not related. However, as the other doctor indicated, patients that are allergic to penicillin should not (in general) take keflex. Your shellfish allergy needs to be taken seriously and not only should you strictly avoid shellfish, you should carry injectable Epinephrine in case you have exposure. ...Read more

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I had iodine constant 6 years ago and it nearly killed me. I want to take prenatal vitamins. Am I allergic to fish oil because of the iodine allergy?

I had iodine constant 6 years ago and it nearly killed me. I want to take prenatal vitamins. Am I allergic to fish oil because of the iodine allergy?

Folate: Take folate, iron and calcium separately instead of a prenatal vitamin. Folate is most important since it protects from certain birth defects. in fact some obstetricians recommend folate alone instead of prenatal vitamins if you are healthy and have a good diet. ...Read more

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Allergy test I took to nuts, fish, milk, soy, was negative. This means, there is no reason for the tongue to swell, and kill me? I have health anxiety

Allergy test I took to nuts, fish, milk, soy, was negative. This means, there is no reason for the tongue to swell, and kill me? I have health anxiety

Allergy tests: The tests you had done were food allergens. Although it is encouraging that they are negative, there are other things you could be allergic to, such as aeroallergens: pollens, grasses, trees, weeds and even animals. Any kind of a reaction to allergen could cause tongue swelling. There are other causes of tongue swelling, but allergies & trauma are most common. Not common to kill, though. ...Read more

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How to cure hives caused by a fish alllergy? Allergic to some fish

How to cure hives caused by a fish alllergy? Allergic to some fish

Important: Important to find out the type of fish first, making sure to differentiate a bony fish from a crustacean. Once that is figured out a blood or skin test is available to help determine what you are allergic to. This can be performed in an allergists office. ...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