Penicillin allergy on the forearm

Credit: DR P. MARAZZI/SCIENCE PHOTO LIBRARY

Caption: Red rash due to an allergy to penicillin. This is a mild example of hypersensitivity, the most important side effect of penicillin. A more extreme form is that of anaphylactic shock, which may be fatal. Persons allergic to one penicillin will be allergic to all types as the basic structure is the same. A rare, serious toxic effect is encephalopathy due to cerebral irritation. This may result from very high doses, and also at normal doses in patients with kidney failure.

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Keywords: allergic, allergy, antibiotic, condition, disorder, drug reaction, healthcare, hypersensitivity, medical, medicine, penicillin, penicillin allergy, rash

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