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Stevens-Johnson syndrome (SJS/TEN)

Also called: Stevens-Johnson syndrome, SJS, TEN

A rare, severe reaction, usually to a medicine, causing a painful rash that blisters and peels, with sores in the mouth, eyes, and genitals.

Common triggersSome seizure medicines, sulfa, allopurinol

Overview

It usually starts 1 to 3 weeks after a new medicine with flu-like symptoms.

Symptoms

Common signs:

  • Painful spreading red or purple rash
  • Blisters and peeling skin
  • Mouth or eye sores

Less common

  • Fever

When to get medical care

Call 911Call 911 now for: painful spreading red or purple rash, blisters and peeling skin, mouth or eye sores.
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:

  • Exam:
  • Skin biopsy:

Treatment

Emergency care is needed. While waiting for help:

Self-care

  • Stop the new medicine
  • Go to the ER

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

  • Survivors: Never take the trigger medicine again; wear a medical ID.

Pregnancy and breastfeeding

  • If you're pregnant or planning to be, tell your prenatal provider about this condition.
  • 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

Burn unit care improves survival.

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 Stevens-Johnson syndrome (SJS/TEN)

Sources

Last updated 2026-11-12.