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Barry was on an antibiotic, but after he took all of it, he had a rash and the doctor prescribed him an antihistamine. Which most likely describes what happened to Barry?
He had a viral infection, but then developed an allergy to the antibiotic.
He had a parasite infection, but then it developed into a bacterial infection.
He had a fungal infection, but then it developed into a viral infection.
He had a bacterial infection, but then developed an allergy to the antibiotic.

All Answers 1

Answered by GPT-5 mini AI
He had a bacterial infection, but then developed an allergy to the antibiotic.

Reason: Antibiotics are used for bacterial infections. A rash after finishing an antibiotic is most consistent with an allergic reaction to the drug, and antihistamines are prescribed to treat allergy symptoms.