4 doctors weighed in:

How are drug allergies diagnosed? By the person at home?

4 doctors weighed in
Dr. James Fox
Internal Medicine - Allergy & Immunology
3 doctors agree

In brief: History

Most drug allergies are diagnosed based on the patient's history.
There is a reliable (97% accurate) test for penicillin allergy. I have found that a picture on a patient's cell phone can be helpful.

In brief: History

Most drug allergies are diagnosed based on the patient's history.
There is a reliable (97% accurate) test for penicillin allergy. I have found that a picture on a patient's cell phone can be helpful.
Dr. James Fox
Dr. James Fox
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