What Is an Epidural Injection for Back Pain and How Does It Work?

Posted by Camila Miller
6
Mar 8, 2025
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Intoduction

Millions of individuals suffer from back discomfort, which is a prevalent issue. It can make daily activities difficult and lower your quality of life. One treatment option that doctors often recommend is an epidural injection. This is a non-surgical procedure that helps reduce pain and inflammation in the spine.

In this blog, we will explain what an epidural injection is, how it works, and who can benefit from it. If you’re considering this treatment for back pain, this guide will help you understand what to expect.

Understanding Epidural Injections

An epidural injection is a simple and effective treatment for back pain. It involves injecting medicine into the epidural space, which is the area around the spinal cord and nerves. The goal is to reduce inflammation and relieve pain.

Doctors often recommend epidural injections for people with conditions like:

  • Herniated discs – when a spinal disc presses on a nerve.
  • Sciatica – pain that travels down the leg due to nerve irritation.
  • Spinal stenosis – a narrowing of the spine that causes nerve pressure.

How Does an Epidural Injection Work?

An epidural injection works by delivering medicine directly to the area around your spinal nerves, called the epidural space. This helps reduce inflammation and relieve pain.

Step-by-Step Process:

  1. Preparation: The doctor cleans the skin and may give you a numbing injection to reduce discomfort.
  2. Guided Injection: Using X-ray guidance (fluoroscopy), the doctor carefully places a thin needle in the epidural space.
  3. Medicine Injection: A mix of steroids (to reduce swelling) and a numbing agent (to block pain) is injected.
  4. Pain Relief Begins: The numbing agent works quickly, but the steroids take a few days to reduce inflammation.

Who Can Benefit from an Epidural Injection?

Epidural injections are helpful for people with chronic back pain caused by nerve inflammation. Doctors often recommend this treatment for:

  • Herniated Discs – When a spinal disc presses on a nerve, causing pain in the back and legs.
  • Sciatica – Sharp pain that travels from the lower back down the leg due to nerve irritation.
  • Narrowing of the spinal - canal that exerts pressure on nerves is known as spinal stenosis.
  • Degenerative Disc Disease – Wear and tear on spinal discs that leads to pain and stiffness.
  • Facet Joint Pain – Inflammation in the small joints of the spine.

How Effective Are Epidural Injections?

Epidural injections can be very effective for reducing back pain, but results vary from person to person. Some people feel relief within a few days, while others may take a couple of weeks. The effects can last from a few weeks to several months, depending on the cause of the pain.

Studies show that epidural injections work best for conditions like sciatica, herniated discs, and spinal stenosis. Many patients experience reduced pain and improved movement, allowing them to return to daily activities.

Potential Risks and Side Effects

Epidural injections are generally safe, but like any medical procedure, they come with some risks and side effects. Most side effects are mild and go away on their own.

Common Side Effects:

  • Soreness at the injection site – Temporary discomfort where the needle was inserted.
  • Mild headache – Can happen if some fluid leaks from the spine.
  • Temporary numbness or weakness – Especially in the legs, but it usually fades quickly.

Rare but Serious Risks:

  • Infection - Although uncommon, an infection at the injection site is possible.
  • Nerve damage – Very uncommon but possible if the needle touches a nerve.
  • Increased blood sugar – Steroids can temporarily raise blood sugar levels, especially in people with diabetes.

Conclusion

Epidural injections are a helpful treatment for back pain, especially for conditions like sciatica, herniated discs, and spinal stenosis. They work by reducing inflammation and can provide relief for weeks or even months.

While the procedure is generally safe, there are some risks and side effects to consider. It’s important to talk to a doctor to see if this treatment is right for you.

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