Cortisone Injections for Radiculopathy(Nerve Pain): What Current Research Says

If you have pain shooting down your leg from the low back, or down your arm from the neck, someone may have mentioned a cortisone shot. For radiculopathy, that usually means an epidural steroid injection or a steroid placed near the irritated nerve root. A cortisone injection for radiculopathy may help some people, but the newest evidence suggests the benefit is usually modest and often short term, especially compared with what many people hope it will do. (American Academy of Neurology)

Key takeaways

• A cortisone injection for radiculopathy may reduce pain and disability for some people for up to about 3 months, with the strongest evidence in the low back rather than the neck. (American Academy of Neurology)
• It is less convincing as a long-term solution, and newer guidance for chronic spine pain has been more skeptical about meaningful benefit versus sham procedures. (BMJ)
• Injections can be reasonable in carefully selected cases, but they usually work best as part of a bigger plan that includes movement, exercise, and symptom management, not as a stand-alone fix. (www1.radmd.com)
• Progressive weakness, bowel or bladder changes, saddle numbness, fever, or other red flags should not be “waited out.” (AANS)

What is radiculopathy?

Radiculopathy means a spinal nerve root is irritated or compressed. In the low back, this often feels like pain, tingling, burning, or numbness traveling into the buttock and leg. In the neck, it can travel into the shoulder, arm, or hand. A disc herniation is one common cause, but narrowing around the nerve can do it too. (American Academy of Neurology)

What current research says about a cortisone injection for radiculopathy

The clearest recent update came from the American Academy of Neurology in February 2025. Their review of 90 studies found that for radiculopathy, epidural steroid injections may modestly reduce pain and disability for up to 3 months. Compared with people who did not get the injection, 24% more reported reduced pain and 16% more reported reduced disability in that short-term window. There may also be a smaller disability benefit beyond 6 months for some people. (American Academy of Neurology)

At the same time, a 2025 BMJ rapid recommendation took a more negative view for chronic spine pain lasting 3 months or longer, including chronic radicular pain. That panel concluded the average benefit compared with sham procedures was little to none and recommended against routine use in most chronic cases. (BMJ)

Those two messages are not as contradictory as they first sound. They looked at somewhat different questions and used different thresholds for what counts as a meaningful benefit. A practical way to read the current research is this: a cortisone injection may be a reasonable short-term pain-calming option for some people with severe radicular pain, but it is much harder to defend as a long-term strategy or a repeat-forever strategy. That is an inference from the newer reviews and guideline summaries. (American Academy of Neurology)

One more important detail: most of the better data are on lumbar radiculopathy. The 2025 AAN review noted that many studies were in the low back, so it is still less clear how well these injections work for cervical radiculopathy in the neck. (American Academy of Neurology)

Pros of a cortisone injection for radiculopathy

A cortisone shot may help by lowering inflammation around the nerve. That can matter when pain is so high that you are not sleeping, walking, sitting, or functioning well. The biggest upside is usually not that the injection “fixes” the problem. The upside is that it may create a window where moving, exercising, and returning to normal activities feels more possible. (American Academy of Neurology)

Possible pros include:

• Short-term pain relief, especially in the first few weeks to 3 months. (American Academy of Neurology)
• Short-term improvement in function or disability scores. (American Academy of Neurology)
• A chance to participate more fully in rehab when pain is otherwise too irritable. (www1.radmd.com)
• In some cases, a way to delay or avoid surgery, although the evidence on repeat injections and long-term outcomes is limited. (American Academy of Neurology)

Cons and downsides

The main downside is simple: the average benefit is often smaller and shorter than patients expect. The 2025 AAN review described the effect as limited and modest. It also found no studies showing whether repeated injections clearly help, or whether they improve outcomes like daily activities or return to work. (American Academy of Neurology)

There are also risks. Most immediate side effects in large series are uncommon and minor, such as vasovagal reactions, temporary pain increase, flushing, headache, or a dural puncture. But corticosteroid labeling and FDA-backed safety language still warn about rare but serious neurologic events, including spinal cord injury, stroke, paralysis, vision loss, and death. (CMS)

Steroids can also affect the rest of the body. In some patients, especially with repeated exposure, concerns include blood sugar spikes, temporary adrenal suppression, immune effects, and possible bone effects. CMS’s evidence review notes even a single injection may have systemic effects, and repeated injections have been associated with increased fracture risk in some studies. (CMS)

That does not mean injections are unsafe for everyone. It means the decision should be individualized. Someone with severe pain for 2 weeks who cannot sleep may weigh the pros and cons differently than someone with milder symptoms for 4 months and no weakness.

What helps besides an injection?

1) Time and staying active

Many cases of disc-related radiculopathy improve with time. Guideline reviews note that nonoperative care is usually first-line unless there is a significant neurologic deficit or cauda equina syndrome, and more than 85% of acute disc-related radiculopathy cases may improve over time. The AANS also notes that most herniated-disc symptoms improve without surgery. (Neurospine)

This is why complete bed rest usually backfires. Short walks, position changes, and calm, tolerable movement are often better than lying down all day. (Neurospine)

2) Physical therapy and exercise

This is one of the best-supported alternatives. A 2024 physical therapy guideline for low back pain and lumbosacral radicular syndrome described the cornerstones of care as risk stratification, shared decision-making, information and advice, and exercise. A recent clinical practice guideline review also found that for low back pain with radiculopathy, multimodal care was the most consistently recommended approach, followed by education and exercise therapy. (Vrije Universiteit Amsterdam)

That is where Low Back Pain Physical Therapy can be useful: calming symptoms, finding positions and movements that are more tolerable, and then progressing back to bending, lifting, walking, training, and daily tasks. For people whose symptoms flare with activity or sports, Orthopedic & Sports Physical Therapy may help guide return to loading without pushing too hard too soon. Later, Strength Training Physical Therapy can help rebuild confidence and tolerance so you are not always depending on passive relief.

3) Medication, used carefully

Medicine can sometimes be a bridge, not a cure. Some guidelines support short-term use of anti-inflammatories when medically appropriate, but overall medication guidance for lumbosacral radiculopathy is inconsistent. A 2024 review of medication recommendations found wide variation among guidelines and no clear best drug for everyone. (PubMed)

4) Surgery, when it is truly indicated

Surgery is usually not the first step, but it can be the right step when weakness is progressive, symptoms are severe and persistent, or imaging and symptoms clearly match a disc herniation that is not improving. Guideline reviews commonly suggest a trial of conservative care for about 6 weeks to 2 months before considering surgery in non-emergency cases. Evidence reviews also show surgery tends to give faster relief in selected patients, while long-term differences versus nonoperative care are often smaller. (Neurospine)

Try-this-today checklist

• Take 3 to 5 short walks instead of one long walk.
• Change position every 30 to 45 minutes.
• Use a symptom-easing position for a few minutes, then get moving again.
• Keep pain in the “annoying but manageable” range instead of pushing into a big flare.
• Write down what makes symptoms better, worse, and no different. That pattern often helps guide treatment.

What to avoid

• Full bed rest for days at a time. (AANS)
• Repeating injections without asking what the overall plan is. (American Academy of Neurology)
• Ignoring growing numbness or weakness. (AANS)
• Expecting the shot to “put the disc back in place.” It may calm inflammation, but it does not remove a herniation or permanently open a narrowed space. (American Academy of Neurology)

When to seek urgent care

Seek urgent medical care right away for:

• New or worsening leg or arm weakness. (AANS)
• Loss of bowel or bladder control. (AANS)
• Numbness in the groin or saddle area. (AANS)
• Severe pain with fever, recent infection, cancer history, or major trauma. (AANS)

When to see a PT

See a physical therapist if your symptoms are lasting more than a week or two, keep returning, are making you avoid normal movement, or you are not sure whether activity is helping or hurting. PT can help you sort out which movements calm symptoms, which loads to modify for now, and how to build back strength without feeding the flare. Guideline-level evidence supports education, exercise, and multimodal care as core noninvasive options. (Vrije Universiteit Amsterdam)

FAQ

Is a cortisone shot the same as an epidural?
Usually, yes. When people say “cortisone shot” for radiculopathy, they usually mean an epidural steroid injection or a steroid injection near the irritated nerve root. (American Academy of Neurology)

How long does relief last?
For the average patient, the best-supported benefit is short term, often measured in weeks to about 3 months. Some people get less relief, and some get more. (American Academy of Neurology)

Should I try PT before an injection?
Often, yes. Many guidelines place nonoperative care first and emphasize education, activity, exercise, and multimodal care. An injection may still be reasonable when pain is too severe to function or participate in rehab. (Vrije Universiteit Amsterdam)

Does the shot fix the cause?
Not usually. It may reduce inflammation and pain, but it does not “heal” every disc bulge or fully reverse narrowing around a nerve. (American Academy of Neurology)

How many injections are too many?
There is no one-size-fits-all number, but the evidence on repeated injections is limited, and repeated steroid exposure carries tradeoffs. That is a good reason to ask what each additional injection is expected to change. (American Academy of Neurology)

Why Quincy Physical Therapy

Quincy Physical Therapy is a spine-focused orthopedic clinic, so radicular pain is something we see often. Our approach is usually to calm the flare, keep you moving, match treatment to how irritable the nerve is right now, and then build strength and load tolerance so daily life feels more doable again.

Schedule an evaluation if you want help deciding whether an injection makes sense, what to try first, or how to build a plan around it.

References

1. Armon C, et al. Epidural Steroids for Cervical and Lumbar Radicular Pain and Spinal Stenosis. Neurology. 2025.
2. Busse JW, et al. Commonly used interventional procedures for non-cancer chronic spine pain: a clinical practice guideline. BMJ. 2025.
3. Jin H, et al. A Systematic Review of Treatment Guidelines for Lumbar Disc Herniation. Neurospine. 2025.
4. Apeldoorn AT, et al. Management of low back pain and lumbosacral radicular syndrome: the Guideline of the Royal Dutch Society for Physical Therapy (KNGF). 2024.
5. Lim TH, et al. Nonpharmacological Spine Pain Management in Clinical Practice Guidelines. J Orthop Sports Phys Ther. 2025.
6. U.S. Food and Drug Administration. Injectable corticosteroid labeling: serious neurologic adverse reactions with epidural administration. 2024.