Mayo Clinic Q and A: How could my penicillin allergy go away?

DEAR MAYO CLINIC: I always thought I was allergic to the antibiotic penicillin, but my doctor did an allergy test, and it turns out I?m not. How is that possible? ANSWER: An estimated 10 percent of people have been diagnosed as having an allergy to penicillin. Having a penicillin allergy on your health record is [...]
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