A cervical epidural is an injection of steroid and numbing medication into the epidural space of your neck, targeting the area just outside the membrane that surrounds your spinal cord. It’s used to reduce inflammation around compressed or irritated nerve roots in the cervical (neck) region of your spine, and it’s one of the most common non-surgical treatments for neck pain that radiates into the arm or shoulder.
Why It’s Done
The injection targets pain caused by a pinched or inflamed nerve root in the neck, a condition called cervical radiculopathy. You might feel this as numbness, tingling, burning, or shooting pain that follows a specific path from your neck down into your shoulder, arm, or hand. The underlying cause is usually a herniated disc, spinal stenosis (narrowing of the spinal canal), or degenerative disc disease pressing on a nerve root.
A cervical epidural is not a first-line treatment. It’s typically offered after 4 to 8 weeks of conservative care, including rest, anti-inflammatory medications, physical therapy, and sometimes a cervical collar, haven’t brought adequate relief. The injection is also reserved for people whose nerve compression is stable, meaning there are no signs of worsening weakness or loss of function that might require surgery instead. Before scheduling one, your doctor will confirm the source of compression with an MRI or CT scan.
What Happens During the Procedure
The injection is performed using live X-ray guidance (fluoroscopy) so the physician can see exactly where the needle is going in real time. You’ll typically lie face down or sit upright, and the skin over your neck is cleaned and numbed with a local anesthetic. The physician then advances a thin needle into the epidural space, which sits between the bony vertebrae and the protective membrane covering the spinal cord.
A small amount of contrast dye is injected first to confirm the needle is in the right position and not inside a blood vessel. Once placement is verified, a combination of a steroid (to reduce inflammation) and a local anesthetic (for immediate but temporary numbing) is delivered to the area around the irritated nerve root. The entire procedure typically takes 15 to 30 minutes.
Two Main Approaches
Physicians use one of two needle routes. The interlaminar approach enters through the gap between two vertebrae at the back of the spine and delivers medication broadly into the epidural space. The transforaminal approach enters from the side, threading the needle closer to the specific nerve root that’s causing problems. Both carry risks, and the choice depends on the location of your problem and your physician’s training. A multi-society pain workgroup recommends that interlaminar injections be performed at the C7-T1 level (the lowest part of the cervical spine) or no higher than C6-7, because the epidural space is extremely narrow at higher levels.
How Well It Works
For many people, a cervical epidural provides meaningful relief, though results vary. In one prospective study of 68 patients with cervical radiculopathy, 62% had relief from a single injection. At an average follow-up of about 39 months, 76% reported complete resolution of arm pain. A separate analysis found that 60% of patients maintained pain reduction and stopped using pain medications at follow-ups ranging from 12 to 45 months.
Interestingly, a randomized controlled trial comparing injections of local anesthetic alone versus local anesthetic with steroid found similar long-term outcomes: 73% of the anesthetic-only group and 70% of the steroid group reported at least 50% pain relief and functional improvement at two years. This suggests that at least part of the benefit may come from the numbing agent itself or from the mechanical flushing of inflammatory chemicals around the nerve, not just the steroid.
The steroid component typically takes 2 to 7 days to reach its full anti-inflammatory effect. Some people feel significant improvement after one injection, while others may need a series of two or three injections spaced weeks apart.
Risks and Complications
Most cervical epidurals are completed without serious problems, but the neck region carries higher stakes than the lower back because the spinal cord itself is present at these levels. Minor side effects can include temporary soreness at the injection site, a brief increase in pain, headache, or mild flushing.
Rare but serious complications include accidental puncture of the membrane surrounding the spinal cord (dural puncture), bleeding that compresses the spinal cord, and infection. The most concerning risk, particularly with the transforaminal approach, involves inadvertent injection into a blood vessel. Ultrasound studies have found vulnerable blood vessels in the needle’s projected path in 5% to 13% of cases at the C5, C6, and C7 levels. If medication or a particulate steroid enters one of these arteries, it can block blood flow to the brain or spinal cord, potentially causing stroke or paralysis. A survey of American Pain Society physician members identified 78 complications from transforaminal cervical injections, including brain and spinal cord infarcts, 13 of which were fatal.
These serious events are rare in absolute terms, but they underscore why fluoroscopic guidance and contrast dye confirmation are considered essential safety steps. The risk profile is one reason cervical epidurals are reserved for patients who genuinely haven’t responded to conservative treatment.
Preparing for the Injection
If you take blood-thinning medications, you’ll likely need to stop them before the procedure. The timelines vary by medication: warfarin is typically stopped 4 to 5 days beforehand, and your doctor will check a blood test to confirm your clotting has normalized. Certain antiplatelet drugs need to be stopped 7 to 14 days in advance. Standard aspirin and over-the-counter anti-inflammatories generally don’t need to be stopped. Your care team will give you specific instructions based on what you’re taking.
You should also mention any active infections, allergies (particularly to contrast dye or anesthetics), or if you’re pregnant. Bring a list of your current medications and arrange for someone to drive you home afterward, since the numbing agent can temporarily affect your coordination.
Recovery and What to Expect After
You’ll be monitored for 15 to 30 minutes after the injection to watch for any immediate reactions. The local anesthetic may cause temporary numbness or a warm sensation in your arm or hand, which wears off within a few hours. Some people feel sore at the injection site for a day or two.
Plan on resting for 1 to 2 days after the injection. During this window, avoid strenuous activity, heavy lifting, and driving. After that initial rest period, you can gradually return to normal activities. The steroid’s anti-inflammatory effect builds over the first week, so don’t judge the injection’s effectiveness on the day of the procedure. Your doctor will typically follow up within 2 to 4 weeks to assess your response and decide whether a repeat injection is needed.