A member asked:

How long does it take for hives to show up from allergic reaction to antibiotic?

A doctor has provided 1 answer
Dr. Ryan Phasouk answered

Specializes in Family Medicine

Can vary: Allergic reactions from taking antibiotics can be an immediate event or can take days to develop. When they take a longer period of time, we call them "delayed hypersensitivity reactions". If there is a concern about an allergy to a medication, it is best to speak with the prescribing physician about what to do next. All the best!

Answered 10/18/2019

4.3k views

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