Let's learn about an injection for back and neck pain? Everything about Epidural Steroid Injection (ESI)

Do you sometimes get a pain that feels like electricity running down your back and down your legs? Or have you been suffering from pain that goes from your neck to your arms for a long time? You must have been unable to do your daily tasks properly with this kind of pain, right? Today we are going to talk about a special injection method that doctors use to control such pain. This is called an Epidural Steroid Injection, or ESI for short.

Simply put, what is Epidural Steroid Injection (ESI)?

This is not as big of a deal as it sounds. An epidural steroid injection (ESI) is an injection of a medicine called a steroid or corticosteroid into the space around the nerves in your spine. This medicine works by reducing the swelling of the nerve roots, which are inflamed and inflamed, and thereby relieving the pain.

Think of your spine as a highway. It is the route through which messages from your brain travel throughout your body. Nerves branch off this highway. Sometimes, a disc between two vertebrae can bulge out, or for some other reason, a nerve that is on this side of the road can become compressed or pinched. That's when unbearable pain occurs.

What the ESI injection does is go right to the pinched, swollen nerve and inject some medicine. This reduces the swelling of the nerve, reduces the pressure, and reduces the pain. The pain relief from this can last for a few days for some people, and for others it can last for months. Also, sometimes this injection helps to find out which nerve is the real cause of the pain.

For what conditions is an ESI vaccine given?

Your doctor will not usually recommend this injection right away. This type of injection is only considered if other treatments, such as physical therapy and painkillers, have not helped your pain.

Here are some common situations where this vaccine is useful:

• Herniated Disk: As we all know, this is a condition called a "herniated disk." This is where a disk between the vertebrae of the spine bulges out and presses on a nerve.
• Spinal Stenosis: Nerve compression due to narrowing of the passageway for the spinal cord within the spine.
• Vertebral Bone Spurs: Bone growths (like spines) on the outside of the vertebrae that press on nerves.
• Failed Back Surgery Syndrome: For those who continue to have pain after back surgery.
• Scoliosis: When nerves are compressed due to curvature of the spine.
• Spondylolysis: Pain caused by the degeneration of the spine with age.
• In cases where the spinal nerves have been damaged due to other accidents.

Are there types of ESI vaccines?

Yes, these vaccines can be divided into several types depending on the site of administration and the method of inserting the needle. It is important for you to know this.

Types of spinal injections based on the site of injection

Types of injection needles according to the route of insertion

This is a bit technical, but let's understand it simply.

• Interlaminar ESI: Here, the needle is inserted between the two laminae, the bony structures at the back of two vertebrae.
• Transforaminal ESI: A needle is inserted through the holes (foramina) where nerves exit the spine, injecting medication directly into the painful nerve.
• Caudal ESI: In this, a needle is inserted through a small opening (sacral hiatus) at the bottom of the spine, just above the buttocks, and medication is injected into the nerves at the bottom.

How should I prepare before this vaccine?

Okay, now let's say the doctor has decided to give you this injection. There are a few things you need to prepare before that. Your doctor will give you clear instructions about this.

• If you are pregnant or planning to become pregnant, be sure to tell your doctor.
• Tell your doctor about all the medications you take (including vitamins and herbal remedies) . If you are taking blood thinners , ask if you need to stop taking them a few days before the injection.
• You may be asked to fast for a few hours before the injection.
• Often, an MRI or CT scan is ordered to determine the exact cause of the pain.
• You will be asked to bring someone to drive you home on the day of the vaccination, as it may be difficult for you to drive after the vaccination.

What happens during the vaccination?

This procedure is usually done in a hospital or outpatient department. The entire procedure takes about 15-30 minutes.

1. First, you will be given a change of clothes and asked to lie on your stomach on a table.

2. Then, the injection site is thoroughly cleaned and disinfected.

3. Next, to reduce the pain of the large needle being inserted, a small needle will be used to inject a numbing medicine into the area. Sometimes, a small numbing medicine may be given to help reduce your fear.

4. Once the area is numb, the doctor will use something like an X-ray machine (fluoroscopy) to make sure the needle is inserted correctly. It is very important that you do not move your body during this time.

5. Once the needle has reached the correct epidural space, sometimes a small amount of dye (contrast material) is injected to see how it spreads. This will help to ensure that the medication is going to the correct nerve.

6. Finally, the steroid medicine is injected slowly.

7. After the injection, the area will be slightly tightened, cleaned, and a plaster applied. You will then be allowed to rest for 30 minutes to an hour, and after making sure there are no side effects, you will be allowed to go home.

You may feel a slight stinging, numbness, or burning sensation when you receive the injection. However, if you experience unbearable pain, tell your doctor right away.

What happens after the injection? Are there any side effects?

After you get the vaccine and go home, it's best to rest for the day. There may be some slight soreness or bruising where the vaccine was given. This is normal.

As with all medical treatments, there are potential risks and side effects. However, these are usually minor, and serious complications are very rare.

What are the emergencies that require seeing a doctor?

If you experience any of the following symptoms after receiving the vaccine and going home, inform your doctor immediately or go to the nearest hospital Emergency Department (ETU).

• A severe headache that occurs when you sit or stand and is relieved when you lie down.
• Fever.
• Inability to control urine or stool.
• Feeling of numbness or weakness in the legs.

It is very important to be aware of these, as they can be signs of very rare, serious conditions.