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Doctor insights on: Eat Penicillin Allergy

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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

Penicillin Allergy (Definition)

Penicillin allergy can be classified as an ige mediated immediate immune reaction in which a patient develops an allergic reaction to the break-down products of penicillin leading to allergy cell activation and mast cell release within 30 minutes to a few hours or it can be a delayed t cell mediated immune reaction in which patients develop a skin rash days after being ...Read more


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I'm allergic to penicillin. Am I also allergic to penicillin derived antibiotics?

I'm allergic to penicillin.  Am I also allergic to penicillin derived antibiotics?

Maybe: Penicillin allergy is usually secondary to either the beta-lactam components or the minor determinants. If you are found to be allergic (via skin testing) to the beta-lactam component then you are at risk for sensitization to all beta-lactam medications, including cephalosporins. Fortunately in the majority of people, this is not the case. You should consult with your local allergy specialist. ...Read more

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Prednisone and food allergies? Is prednisone helpful for a bad food allergy reaction?

Prednisone and food allergies?  Is prednisone helpful for a bad food allergy reaction?

Less so: The best treatment for food allergies defined as having symptoms after ingesting certain foods (and not just having a blood testing stating food allergy is present) is first and foremost, avoidance and secondarily by carrying epipen(jr) which is adrenaline which can be injected into the person's thigh asap after contact with the allergen. Prednisone is much less useful. ...Read more

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I'm allergic to shellfish. Can I eat squid?

I'm allergic to shellfish. Can I eat squid?

Maybe: About 10-15% of people who are allergic to shellfish are also allergic to mollusks (including squid). An allergist can help you find out. If you have not eaten squid since your shellfish reaction, you should be evaluated before trying because of the risk of reaction. ...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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Is quince an Allergic fruit?

Is quince an Allergic fruit?

Could be: Any food can cause an allergy in a person. If you have symptoms every time you eat it, then you might be allergic or intolerant of the substance. If your symptoms go away when you don't eat it, that tells you that the particular food (quince in your case) is the culprit. ...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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How is nut allergy testing and de-sensitizing done? Orally? Shots?

How is nut allergy testing and de-sensitizing done?  Orally?  Shots?

Nut Allergy: Testing for nut allergy can be done either by skin test or by blood testing. There is no currently available desensitization for nuts, outside of that being done for clinical research. If someone offers you nut allergy desensitization, be very skeptical. ...Read more

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Can peanut allergics eat honey ?

Can peanut allergics eat honey ?

Yes: Patients with peanut allergy need to be very cautious about cross contamination. Also about 50% of peanut allergic patients may develop a nut allergy. However, there is no need to avoid honey. ...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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If i'm allergic to shellfish, what seafood can I eat?

Finned fish: Most people who are shellfish allergic can eat finned fish (salmon, tuna, cod, etc) without a problem. You may be able to eat mollusks (clams, squid, octopus). For both, you should check with your doctor, as some testing can be helpful to make these recommendations specifically for you, and specific recommendations vary depending on how severe your reaction was and your test results. ...Read more

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Safe to mix penicillin vk and food?

Safe to mix penicillin vk and food?

Penicillin: It is preferred to take penvk on an empty stomach for better absorption. However, if it causes abdominal discomfort, it can be taken with food and it will still be as effective. ...Read more

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If i'm allergic to ragweed, should I eat wheat?

If i'm allergic to ragweed, should I eat wheat?

Not necessary: Ragweed is an inhalent allergen. A reaction to ragweed will not be affected by eating wheat. ...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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Why give a patient zosyn (piperacillin and tazobactam) if allergc to penicilln?

Why give a patient zosyn (piperacillin and tazobactam) if allergc to penicilln?

You shouldn't: You shouldn't. Zosyn (piperacillin and tazobactam) contains the penicillin class antibiotic piperacillin which would have a very high likelihood for cross allergenicity with other drugs of the penicillin class. ...Read more

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Dr. John Chiu
2,628 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