Lumbar Sympathetic Nerve Block Treatments | AllSpine
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Epidural Injections

What is a lumbar sympathetic block?

A lumbar sympathetic block is an injection of medication that helps relieve lower back or leg pain (sciatica). It can be used to treat:

  • Reflex sympathetic dystrophy
  • Complex regional pain syndrome
  • Herpes zoster infection (shingles) involving the legs
  • Vascular insufficiency
  • Peripheral neuropathy

Sympathetic nerves are located on both sides of your spine, in your lower back. A steroid medication and local anesthetic injected into or around your sympathetic nerves can help reduce pain in that area.

How effective is a lumbar sympathetic block?
Some patients report pain relief immediately after the injection, but the pain may return a few hours later as the anesthetic wears off. Longer term relief usually begins in two to three days, once the steroid begins to work.

Usually people need a series of injections to continue the pain relief. Sometimes it takes only two injections; sometimes it takes more than 10.

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