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Doctor insights on: Allergic Penicillin Will Other Antibiotics Diphtheria

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Diphtheria (Definition)

Diphtheria is a potentially fatal, contagious disease that usually involves the nose, throat, and air passages, but may also infect the skin. Its most striking feature is the formation of a grayish membrane covering the tonsils and upper part of the throat. This is a preventable disease by vaccination. It is ...Read more


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I'm allergic to penicillin, will other antibiotics work against a streptococcal b infection?

Yes: There are a number of effective antibiotics that your doctor can choose. Most patients who think that they are allergic to penicillin are not. Even patients who had a reaction in the past usually lose the allergy. An allergist can test to see if you are allergic. ...Read more

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What's a good antibiotic to take if your allergic to penicillin?

Cindamycin: An accepted alternative is clindamycin. The dose and frequency will need to be determined by your provider. Stay away from Amoxicillin or augmentin (amoxicillin and clavulanate). Azithromycin is also an acceptable alternative. ...Read more

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Which antibiotics cannot be given to someone who is allergic to penicillin?

Which antibiotics cannot be given to someone who is allergic to penicillin?

"cillins": Drugs where 'cillin is at the end of the name are penicillin derivatives. It turns out that drugs like Cephalosporins which share some features of the penicillin molecule are no longer considered to be cross reactive. ...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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Am I allergic to penicillin, and will I have to get expensive antibiotics instead?

Am I allergic to penicillin, and will I have to get expensive antibiotics instead?

Allergy test.: Penicillin allergy testing is available. A series of skin scratches, followed by under the skin tests are performed over 30-40 minutes. If they show no reaction, then a dose of penicillin may be given in the doctor's office to confirm beyond a doubt that there is no immediate reaction. By returning penicillin and other antibiotic choices, cost-effective treatments become available again. ...Read more

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I'm allergic to penicillin. What are the complications if I am given this antibiotic by accident?

I'm allergic to penicillin.  What are the complications if I am given this antibiotic by accident?

Depends: When one is truly allergic to penicillin, if given this could cause a reaction anywhere from hives to serious anaphylaxis. A great number of people who have a history of a reaction to penicillin, especially just a rash, may not truly be allergic or at risk. A board certified allergist can do an evaluation including allergy skin tests and an oral challenge if indicated. ...Read more

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

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

Some of them: Their are different "classes", or families of antibiotics. You would be likely to have a reaction to amoxicillin, for instance. Their is some cross reactivity with cephalosporins, like keflex, in approximately 15% of people. You could be allergic to other meds as well, but would not be much more likely than the general population to have an allergy to quinolones, like cipro, (ciprofloxacin) or macrolides. ...Read more

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If a child is allergic to mold, could he also be allergic to penicillin-based antibiotics?

No: Good question. Being allergic to mold does not increase the risk of being allergic to penicillin based antibiotics. By extension. Penicillin allergic patients are not therefore allergic to blue cheese (which is a mold in the cheese). ...Read more

Dr. John Leander Po
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Antibiotic (Definition)

An antibiotic is a medicine that slows, stops, or kills germs. The germs are usually bacteria causing an infection in a person, so the person uses antibiotics to help his body get ...Read more