Tests and procedures used to diagnose Stevens-Johnson syndrome include:
- Physical exam. Doctors often can identify Stevens-Johnson syndrome based on your medical history and a physical exam.
- Skin biopsy. To confirm the diagnosis, and rule out other possible causes, your doctor may remove a sample of skin for laboratory testing (biopsy).
- Culture. Skin or oral culture or culture from other areas may be taken to confirm or rule out infection.
- Imaging. Depending on your symptoms, your doctor may have you undergo a chest X-ray to check for pneumonia.
- Blood tests. These are used to confirm infection or other possible causes.