Title: Sulfa Allergies: What You Need to Know
Headings: Sulfa Allergy
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Sulfa Allergy
What Is a Sulfa Allergy?
Sulfa Allergy Symptoms
Drugs to Avoid With Sulfa Allergies

Content: Sulfa Allergies: What You Need to Know
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Sulfa Allergy
Medically Reviewed by Hansa D. Bhargava, MD on August 05, 2020
What Is a Sulfa Allergy? A sulfa allergy is a rash or more serious reaction to sulfa drugs. These drugs can treat a range of health problems from eye infections to rheumatoid arthritis (RA). Sulfa drugs, also called sulfonamides, include antibiotics as well as other types of drugs. Allergies happen most often with antibiotics. About 3 percent of people have some type of reaction to them. Tell your doctor right away if you think you’re having a reaction to a sulfa drug. They’ll decide whether to take you off the drug and how to treat your symptoms.