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Doctor insights on: Penicillin Allergy In Children

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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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What is given for a penicillin allergy?

What is given for a penicillin allergy?

Depends on reaction: In the acute setting, a severe reaction to penicillin might be treated with injectable epinephrine, steroids or benadryl (diphenhydramine). Otherwise, there is no treatment for penicillin allergy other than avoidance. If you have an infection that requires penicillin despite the history of allergy, a penicillin desensitization can be performed. ...Read more

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What is given for a penicillin allergy?

What is given for a penicillin allergy?

Well: Not sure of your question. You can be desensitized but rather risky. You can always avoid pen and be treated with other antibiotics ...Read more

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How to find out if I have a penicillin allergy?

How to find out if I have a penicillin allergy?

Covered by insurance: Testing for penicillin allergy involves skin testing to many of the different components of penicillin (major and minor). This testing is relatively painless and can be done in 2-3 hours. Insurance usually covers such testing. ...Read more

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How to find out if I have a penicillin allergy?

How to find out if I have a penicillin allergy?

Skin test: The formal means is to have skin testing done by a doctor. The agent is prepared to a standard small dose and injected under the skin. Reaction or not is assessed in a standard time interval. ...Read more

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What can you take if you have a penicillin allergy?

What can you take if you have a penicillin allergy?

Skin testing: 90% of pt labelled as PCN allergic are not PCN allergic. PCN skin testing and possible oral challenges can be done to clarify this reported sensitivity. ...Read more

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What is the definition or description of: penicillin allergy?

What is the definition or description of: penicillin allergy?

Penicillin allergy: 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 treated with the antibiotic. ...Read more

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Do you need to wear a Medical ID bracelet for a penicillin allergy?

Probably not: Unless you have had a severe anaphylactic reaction (where your throat or mouth swelled and it interfered with breathing) then you probably don't need to wear a bracelet for that. Just remember to tell any treating doctor about the allergy. ...Read more

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What can I take instead of penicillin if I have a penicillin allergy?

What can I take instead of penicillin if I have a penicillin allergy?

Depends: That depends on what's infected. The choice of antibiotics is dependent on the type of infection. ...Read more

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I've heard that some people with penicillin allergy can safely take penicillin 10+ years after initial reaction. Is this true?

I've heard that some people with penicillin allergy can safely take penicillin 10+ years after initial reaction. Is this true?

No!!! Not true: If you are truly allergic you should never again take penicillin derivatives without a very good reason and physician oversight. The potential for severe life-threatening reactions remains present. Now, you must be sure that you actually had a reaction to penicillin and a good allergist or infectious diseases expert can help to determine this. Nice to hear from another Louisvillian. ...Read more

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How much is a penicillin allergy test?

Depends: You should shop around - it can vary by provider, lab and region as well as if you pay cash or use insurance - would recommend calling a company like labcorp or quest for info. ...Read more

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How much does a penicillin allergy test cost?

Covered by insurance: Testing for penicillin allergy involves skin testing to many of the different components of penicillin (major and minor). This testing is relatively painless and can be done in 2-3 hours. Insurance usually covers such testing. ...Read more

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Can you eat bleu cheese if you have a penicillin allergy?

Can you eat bleu cheese if you have a penicillin allergy?

Not the same: The color of bleu cheese is not produced by penicillium, although imagine that if it sat around long enuf and became contaminated this could grow on it. ...Read more

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Will desensitizing me to penicillin reduce my penicillin allergy?

Will desensitizing me to penicillin reduce my penicillin allergy?

Yes, but...: Desensitization is not permanent. You have to be desensitized each time you need to take penicillin, if there are no effective alternative antibiotics that could be used. Your state of desensitization will continue for as long as you take penicillin every day, but you'll have to be desensitized again if you don't take penicillin for more than 48 hours in a row. ...Read more

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I have a history of penicillin allergy and just today prescribed amoxacillin. Will I die?

I have a history of penicillin allergy and just today prescribed amoxacillin. Will I die?

Medical Records: It is important to speak to your physician about your history of penicillin allergy. If it is an allergic reaction, then your medical records should contain an alert. I would also advise your pharmacist, so that they may also list the allergic reaction in your records. ...Read more

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How can you test for penicillin allergy?

How can you test for penicillin allergy?

Skin and other tests: It depends on which antibiotic is of concern. There are skin tests available for many of them, but they should be performed by a properly trained allergist with the necessary controls. After skin testing, depending on the history, another step (cautious challenge or desensitization) may be necessary. ...Read more

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How long do penicillin allergy hives take to clear?

Varies: Hives due to drug allergy usually improve within a day or two of stopping the medicine but can last as long as a week or two. It is best to call the doctor to determine what treatment is needed. ...Read more

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How long does a penicillin allergy rash take to clear?

How long does a penicillin allergy rash take to clear?

Up to 30 days: Drug allergies can resolve in a few days and may persist for several weeks until the residual penicillin by products are cleared from body. ...Read more

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Can you take cefaclor if you have a penicillin allergy?

Can you take cefaclor if you have a penicillin allergy?

See below: Depends on your pcn allergy
2-3 % cross allergy
usually ok
be careful if you have a bad reaction to pcn. ...Read more

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How do I know when will my penicillin allergy rash go away?

How do I know when will my penicillin allergy rash go away?

A week or so: It takes about a week or so if it is indeed caused by penicillin. Amoxicillin often causes a skin rash when used for a viral infection. ...Read more

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What antibiotics do you take if you have a penicillin allergy?

What antibiotics do you take if you have a penicillin allergy?

Lots of Options: Depends on the infection. Certain infections call for different antibiotics. Penicillin drugs are usually first line for most problems, however there are alternatives that can be used. Your doctor would be the best person to talk about what options are right for you. If you are interested in determining if you still have a penicillin allergy, see an Allergist for penicillin skin testing. ...Read more

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How long does it take a rash due to a penicillin allergy to clear?

How long does it take a rash due to a penicillin allergy to clear?

< 7 - 10 days: Antibiotics like penicillin can cause different types of rashes that can vary in how long they persist. The classical true penicillin allergic rash is hives and once the penicillin is stopped usually resolves in less than 7-10 days. Occasionally this can trigger more prolonged hives. Other rashes from penicillin not due to true allergy would include small red bumps that usually lasts < 1-2 wks. ...Read more

Dr. John Chiu
2,630 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