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What are the skin symptoms of sulfa allergies?

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Skin symptoms of sulfa allergies can include:

Other reactions to sulfa drugs include headache, trouble sleeping, cloudy urine (crystalluria), and low blood counts. Rarely, a severe allergic reaction called anaphylaxis happens.

  • Sulfonamide drug hypersensitivity syndrome: Rash, fever, and organ problems begin within 1 to 2 weeks after you start the drug.
  • Drug eruption: Red or swollen, rounded patches form in 30 minutes to 8 hours.
  • Stevens Johnson syndrome: This potentially life-threatening reaction causes skin to blister and peel off.

From: Sulfa Allergies: What You Need to Know WebMD Medical Reference

SOURCES:

DermNet New Zealand: “Sulfa Drugs and the Skin.”

Canadian Family Physician : “Approach to Managing Patients with Sulfa Allergy.”

American College of Allergy, Asthma and Immunology: “Drug Allergies.”

Merck Manual, Professional Version: “Sulfonamides.”

Cleveland Clinic: “Sulfite Sensitivity.”

Reviewed by Neha Pathak on January 23, 2017

SOURCES:

DermNet New Zealand: “Sulfa Drugs and the Skin.”

Canadian Family Physician : “Approach to Managing Patients with Sulfa Allergy.”

American College of Allergy, Asthma and Immunology: “Drug Allergies.”

Merck Manual, Professional Version: “Sulfonamides.”

Cleveland Clinic: “Sulfite Sensitivity.”

Reviewed by Neha Pathak on January 23, 2017

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What drugs should I avoid with sulfa allergies?

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