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Serious drug rash (DRESS or AGEP)

Also called: DRESS, AGEP, serious drug rash

Severe medicine reactions causing widespread rash, fever, swelling, and organ problems weeks after starting a drug.

TriggersSeizure medicines, allopurinol, some antibiotics

Overview

DRESS starts 2 to 8 weeks after a new medicine.

It can harm the liver or kidneys.

Symptoms

Common signs:

  • Widespread rash with fever
  • Face swelling
  • Rash or reaction after starting a medicine

Less common

  • Swollen glands

When to get medical care

Call 911Call 911 now for: widespread rash with fever, face swelling.
Get care todayMilder symptoms that could be early signs.
See a doctor soonQuestions about lowering your risk.

Causes

Medicine reaction.

Does it spread or run in families?

  • It isn't contagious. You can't catch it from someone else.

Diagnosis

This is diagnosed in the emergency room or hospital.

The exam

A physical exam.

Tests

Tests, if needed:

  • Blood tests:

Treatment

Emergency care is needed. While waiting for help:

Self-care

  • Get emergency care
  • Stop the new medicine

Prevention

To lower your risk or prevent problems:

  • Carry a list of drug allergies

Which doctor treats this

  • Emergency doctors treat it first, in the ER.
  • They may send you to a dermatologist (skin doctor).

Living with it

Support groups and helplines

Back to school, work, or sports

  • Recovery time varies. Ask your care team when you can drive, lift, work, and exercise.

Children, pregnancy, and older adults

  • People taking seizure medicines: Higher risk.

Pregnancy and breastfeeding

  • If you're pregnant or planning to be, tell your prenatal provider about this condition.
  • Some skin medicines, like isotretinoin and retinoid creams, aren't safe in pregnancy.
  • Don't start or stop any medicine on your own. Some are safe in pregnancy and some need to be changed.
  • Ask before taking any pain reliever. The FDA advises avoiding ibuprofen and naproxen after 20 weeks unless your doctor says to.
  • Breastfeeding: Most medicines are fine, but ask. The NIH LactMed database lists what's known about each one.

For caregivers

  • Go to visits when you can and take notes.
  • Keep a list of medicines, allergies, and doctors in one place.
  • Learn the warning signs that need fast care.
  • Learn CPR. Many hospitals and the Red Cross offer classes.
  • Take breaks and ask for help. Caregivers need care too.

Outlook

Most recover after stopping the drug.

Getting ready for your visit

Bring a list of your symptoms and medicines.

What to bring

  • A list of your medicines and supplements
  • Notes on when symptoms started and what makes them better or worse

Questions to ask

  • What follow-up care do I need?
  • How can I prevent this from happening again?

Research studies

Research studies test new ways to find and treat health problems. Some are looking for volunteers. Talk with your doctor before joining one.

Search ClinicalTrials.gov for studies on Serious drug rash (DRESS or AGEP)

Sources

Last updated 2026-11-12.