Patient handout · Pain treatments
Lumbar Sympathetic Block
What it is
A lumbar sympathetic block puts numbing medicine near a group of nerves in the low back. These nerves can play a part in some kinds of leg pain. The block may ease that pain.
Why it is done
- Complex regional pain syndrome of the leg
- Certain nerve pain conditions of the lower limbs
- Some circulation-related pain
What to expect
- Before: We review your medicines, especially blood thinners, and any allergies. You may need someone to drive you home.
- During: You lie on your stomach. The skin is cleaned and numbed. Using X-ray, the doctor guides a thin needle to the nerves and gives the medicine.
- After: Your leg may feel warm for a few hours. This is common. You usually go home the same day.
Self-care tips
- Rest the day of your injection. Most people return to light activity the next day.
- Ice on the site for 15 to 20 minutes may ease soreness.
- Keep a pain diary for 2 weeks to share with us.
- Keep taking your usual medicines unless we tell you otherwise.
When to call us
- Fever or chills
- Redness, swelling, warmth or drainage where the needle went in
- Pain that is much worse than before, or new weakness or numbness
- A bad headache that is worse when you sit or stand
Call 911 for trouble breathing, chest pain, or loss of bladder or bowel control.
This handout is general information and is not a substitute for medical advice.