How can I know if my penicillin allergy is real?

People with a penicillin allergy on their medical record are not given penicillins (or often their relatives the cephalosporins) when they have infections. Instead, the antibiotics prescribed may be broader-spectrum, less effective, and/or more toxic. Penicillin alternatives may be less effective or more toxic One recent national study … Read entire story.

Source: Harvard Health Blog