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Doctor insights on: Penicillin Allergy

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Penicillin Allergy (Overview)

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.


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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

Penicillin Allergy (Overview)

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.


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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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Treating Skin Allergies (Checklist)

Use hydrocortisone
2x day
Do not use diphenhydramine topical cream
once
Avoid the offending agent (s)
once
Find out if you are allergic to nickel, as nickel is often the cause of skin allergies
once
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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 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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I recently developed a penicillin allergy. Does this mean I need to be careful of any probiotics now as well?

I recently developed a penicillin allergy. Does this mean I need to be careful of any probiotics now as well?

Penicillin allergy: No, there is no cross-reactivity between the usual organisms contained in probiotic preparations and the drug penicillin or its derivatives. You should, however, make note of the type of reaction you experienced and transmit this information to any doctor you see for any reason. People with an allergic reaction to one agent may have a higher risk of reacting to others. ...Read more

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Can you still be treated for most infections if you have a penicillin allergy?

Can you still be treated for most infections if you have a penicillin allergy?

Yes: Despite increasing antibiotic resistance, there usually is another antibiotic that can be found. If this is not the case, and there is a serious need for penicillin, many penicillin allergies can be desensitized. This procedure takes place in the hospital and only lasts for the duration of time that you are taking penicillin, but is effective. So in emergencies, there are still options. ...Read more

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What treatments are appropriate for tonsillitis when you have a penicillin allergy?

What treatments are appropriate for tonsillitis when you have a penicillin allergy?

Zithromax: Azithromycin (zithromax) is a good option for streptococcal tonsillitis. There is some cross-reactivity between penicillins and cephalosporins (such as keflex), and these would not be my first choice. Many infections are caused by viruses, and in this situation antibiotics are not effective. ...Read more

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Should fluoroquinolones be avoided for people who have penicillin allergy?

Should fluoroquinolones be avoided for people who have penicillin allergy?

No, they're fine: There is no cross reaction between these two classes of antibiotics. ...Read more

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What happens if you can't have a penicillin shot for syphilis?

What happens if you can't have a penicillin shot for syphilis?

Doxycycline: Doxycycline for 2-4 weeks is recommended if penicillin cannot be given, or sometimes ceftriaxone. However, penicillin is by far the best drug. If you had a severe penicillin allergy in the past, then probably penicillin should be avoided. Otherwise, it still might be the best choice for you. Discuss it with your doctor or, even better, an infectious diseases or STD specialist. ...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?

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?

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

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