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Doctor insights on: Penicillin Allergy Is Moldy Food Dangerous

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Is it dangerous to eat moldy bread if you have a penicillin allergy?

Is it dangerous to eat moldy bread if you have a penicillin allergy?

No: Most mold on bread is rhizopus, not penicillium, and would not cause a reaction in those with allergy to the drug penicillin. There have been a few penicillium molds producing penicillin found in some sausages and cheeses, but generally, there probably is not enough penicillin to cause a reaction, since this is almost never seen. The usda recommends that moldy breads be discarded for everyone. ...Read more

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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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How much is a penicillin allergy test?

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?

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: The way desensitization works is that you are given very small doses of penicillin initially. The amount is gradually increased to get your body not to react to it. There are very few infections that require treatment with pcn so desensitization is rarely done. ...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?

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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Black Mold (Definition)

Molds consist of airborn spores and spreading forms (hyphae) growing on surfaces. Several species are black including stachybotrys and aspergillus. Black mold ingestion has been associated with a toxic syndrome with brain and blood disorders. Most patients do not ingest black mold so the correlation with their ...Read more


Dr. John Chiu
2,479 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