What is a Thoracic Epidural Steroid Injection
- Epidural steroid injections help treat many painful spine-related conditions, including:
– Disc herniation
– Sciatica or radicular nerve pain
– Post-surgical spine pain
– Acute shingles (herpes zoster) and post-herpetic neuralgia
– Cancer-related spine pain - ESIs are minimally invasive, non-surgical treatments used alongside physical therapy and other conservative care.
Goal of the Procedure
- Many types of back and nerve pain are caused by inflammation around the spinal nerves.
- Injecting a steroid (cortisone) into the epidural space helps calm inflammation, reduce irritation, and decrease pain.
- The goal is to reduce nerve swelling, decrease sensitivity, and improve your ability to move and participate in rehabilitation.
The Procedure
- The injection is performed in a sterile procedure room using X-ray guidance for accuracy and safety.
- Most patients do not need sedation; the skin is numbed with local anesthetic.
- Depending on the injection type, you may feel a brief “electric” sensation radiating into the arm or leg.
– This is common, temporary, and not harmful. - The procedure typically takes 10-15 minutes.
- After the injection, you’ll spend a short time in recovery before going home.
After the Procedure
Follow the instructions provided to you at discharge:
- If sedation was used:
– Do not drive or use heavy machinery for 24 hours. - Activity:
– Resume normal daily activities as tolerated.
– Showering is okay.
– Do not soak in a bathtub, pool, or lake for 24 hours. - Pain relief timing:
– It may take 7–10 days for the steroid to start working.

