Penicillin Allergy

Lisa just called from the pharmacy after taking Evan to the doctor for the second time in as many weeks. He had a new rash pop up yesterday, and even though I wasn’t concerned about it, she said it had gotten worse throughout the day and wanted to take him in. The result? Penicillin allergy. Apparently it pops up about 7 days after you take it, and now that I think about it, his rash faded a bit throughout the day, and then got worse again right after I gave him his antibiotics last night.
So, all potential babysitters and caregivers of Evan: he’s allergic to penicillin and can never have it again. Some common penicillin antibiotics are amoxicillin (Amoxil, Amoxicot, Biomox, Dispermox, Trimox), ampicillin (Omnipen, Principen). carbenicillin (Geocillin), dicloxacillin (Dycill, Dynapen) and oxacillin (Bactocill). Evan was taking amoxicillin, which Lisa couldn’t stand the smell of, so I guess that’s a bright side.
The good news is that we caught it now and we know, so we can be aware in the future. The bad news is that every form we or he ever has to fill out at a doctor’s office from here on will have to check that penicillin allergy box.