Quick Answer
Sciatica describes pain travelling down the leg along the sciatic nerve. Radiculopathy is the underlying problem: a nerve root irritated or compressed near the spine. CNS identifies which root is affected and whether nerve function is being lost, using AANEM-accredited testing in Las Vegas and Henderson.
Key Takeaways
- Sciatica is a symptom and radiculopathy is a diagnosis. Pain down the leg can arise from a nerve root, from the hip or pelvis, from a peripheral nerve, or from the spinal cord, and treatment differs sharply between them.
- Which root is involved determines the pattern. Each nerve root supplies a predictable strip of skin and a predictable set of muscles, so where the numbness sits and which movements are weak identifies the level without imaging.
- Imaging findings and symptoms often disagree. Disc changes are common in people with no pain at all, so a scan showing a bulging disc does not by itself explain a symptom, and an electrodiagnostic study tests whether the nerve is actually affected.
- The neurological question is whether function is being lost. Pain is what patients report; weakness, reflex loss and measurable nerve fibre change are what determine urgency and whether surgery should be considered.
- CNS diagnoses and manages medically. It does not perform spinal surgery or run an interventional pain programme, and refers with the accredited report attached where either is needed.
01 — OverviewSciatica names a symptom, radiculopathy names a cause
Patients arrive with sciatica and are treated for pain travelling down the leg, which is a description of where the discomfort goes rather than an account of what is producing it. Radiculopathy is the underlying diagnosis in most cases: a nerve root irritated or compressed as it leaves the spine. Establishing which root, and whether the nerve is losing function, is what changes the plan. This page sits within the wider neurological conditions library at Clinical Neurology Specialists.
Why the level can be identified from the examination
Each nerve root supplies a predictable strip of skin and a predictable set of muscles, which makes this one of the more satisfying areas of neurological examination. Numbness over the top of the foot with weak ankle dorsiflexion points to one level. Numbness on the sole with a reduced ankle reflex points to another. Numbness on the inner calf with a reduced knee reflex points higher still. That mapping means a careful examination frequently localises the problem before any test is ordered, and it is what a test is then measured against.
What else sends pain down a leg
A root is the commonest explanation and not the only one. Hip joint disease refers pain into the thigh and groin. Piriformis and gluteal problems produce buttock pain that travels. Peripheral nerve entrapment further along the course produces a narrower distribution. Vascular claudication produces leg pain brought on reliably by walking a distance and relieved by standing still, which is a different pattern altogether. Spinal cord problems produce findings in both legs and change the urgency substantially.
The cervical version, which patients rarely name
Radiculopathy in the neck produces the same mechanism in the arm: pain, numbness or weakness following a root down toward the hand, often with neck pain. Patients describe it as a trapped nerve or assume it is carpal tunnel syndrome, and it is worth distinguishing because the treatment pathway differs. The overlap with carpal tunnel syndrome is common enough that both are sometimes present at once.
Radiculopathy is dysfunction of a nerve root where it leaves the spine, producing pain, numbness or weakness in the specific area that root supplies, and sciatica is the term for that pattern when it travels down the back of the leg.
02Why imaging alone does not settle it
This is the most useful thing on this page, and the point patients are least often told. Imaging shows anatomy. It does not show whether a nerve is working.
Disc changes are common in people without symptoms
Bulging and degenerative disc changes appear routinely on scans of people who have no back or leg pain whatsoever, and they become more common with age. That means finding one on a scan does not establish that it is causing your symptoms. It establishes that it is present. Where a scan finding sits at a level that does not match the examination, the finding is probably incidental, and treating it would be treating the wrong thing.
What an electrodiagnostic study adds
Nerve conduction studies and electromyography assess function rather than appearance. They establish whether a root is actually affected, at which level, whether the change is recent or long-standing, and whether nerve fibres are being lost. They also identify whether the problem is a root at all rather than a peripheral nerve or a more generalised neuropathy, which imaging cannot do. Detail is on the EMG and nerve conduction guide, and the standard behind it comes from the American Association of Neuromuscular & Electrodiagnostic Medicine.
Where CNS does and does not perform imaging
Magnetic resonance imaging is often appropriate, particularly where surgery is being considered or where findings suggest cord involvement. CNS does not operate an imaging suite, so it is coordinated with an outside facility. Mention it at booking so the sequence can be planned in one pass rather than three, which matters when a surgical opinion is waiting on it.
| Question | Imaging | Electrodiagnostic study |
|---|---|---|
| Is there a structural abnormality | Yes | No |
| Is the nerve actually affected | No | Yes |
| Which root, functionally | Suggests | Establishes |
| Recent or long-standing | No | Yes |
| Root, peripheral nerve or neuropathy | Limited | Yes |
| Performed at CNS | Coordinated externally | In our own offices |
Scan showed a disc but nobody tested the nerve?
Imaging shows anatomy. A nerve study shows whether the nerve is actually affected, and at which level.
03What the evaluation involves, and what raises urgency
The evaluation is a history establishing the distribution and timeline, an examination mapping it to a root, and testing where the findings call for it.
The distribution
Where the pain starts and where it travels, what provokes and relieves it, whether there is numbness or weakness, and how it has changed since onset.
Mapping to a level
Sensation in specific territories, strength in the muscles each root supplies, reflexes, and manoeuvres that reproduce the symptom by tensioning the nerve.
Function, not anatomy
Nerve conduction and electromyography where localisation is uncertain, where weakness is present, or where a surgeon needs the severity documented.
The findings that change urgency
Most radiculopathy is managed without haste, and a few presentations are not. Progressive weakness rather than stable weakness. Weakness affecting both legs. Loss of bladder or bowel control, or numbness in the saddle area, which together suggest compression of the lowest nerve roots and constitute an emergency rather than an appointment. Fever with back pain, or back pain with a history of cancer, both warrant prompt rather than routine assessment. Those are the cases where the answer is an emergency department, not a scheduling queue.
Pain severity and nerve damage are different measures
This surprises patients and matters for decisions. Severe pain with a normal examination and an intact nerve is uncomfortable and generally has a good outlook. Modest pain with measurable weakness and fibre loss is a more significant situation despite feeling less dramatic. Treatment decisions follow function rather than pain intensity, which is worth explaining at the outset because it otherwise reads as the pain being dismissed.
04Treatment, and where CNS sits in it
Most radiculopathy improves. A substantial proportion of disc-related root problems settle over weeks to months without surgery, which is the single most reassuring fact available and the reason conservative management is the usual starting point rather than a delaying tactic.
What conservative management actually involves
Time, in the sense that the natural course is favourable. Activity modification that is specific rather than blanket rest, since prolonged inactivity slows recovery. Physiotherapy directed at the mechanical contribution. Medication aimed at neuropathic pain, which responds poorly to ordinary analgesics because of the mechanism rather than the dose, and which frequently needs adjustment before a workable option is found.
What CNS provides and what it refers
The practice provides the diagnosis, the localisation, the severity documentation and medical management. It does not perform spinal surgery, does not perform epidural or facet injections, and does not run an interventional pain programme. Where an injection or a surgical opinion is indicated, the referral is made with the accredited report attached, which is what allows the receiving clinician to see documented severity rather than a description. Options the practice does deliver are on the treatments hub.
When surgery enters the conversation
Where weakness is progressing, where a documented nerve deficit is not recovering, where pain remains disabling after a reasonable trial of conservative management, or where imaging and examination agree on a compressive lesion at a level that matches. The role of the electrodiagnostic study here is specific: it documents that the nerve is genuinely affected and at what level, which is exactly the question a surgeon needs answered before operating on a scan finding.
Why timing the surgical decision is a judgement, not a formula
There is no universal interval after which conservative management becomes a failure. The relevant variables are whether the trajectory is improving, static or worsening, whether a documented deficit is recovering, and how much the pain is costing the patient in work and function. A patient improving slowly is on a different footing from one who has plateaued at the same level for three months, even where both report similar pain. That is why follow-up is scheduled rather than left to the patient to initiate, because the trajectory is the information the decision rests on.
Recovery, honestly described
Pain frequently improves faster than numbness, and numbness frequently improves faster than weakness, because nerve fibre recovery is slow and measured in months. Some numbness can persist after the underlying problem has resolved, which is not a treatment failure but a consequence of how nerves heal. Setting that expectation early prevents a good outcome being read as an incomplete one. Nothing here promises a result; responses vary between individuals.
05Radiculopathy, neuropathy and the overlap that complicates both
These conditions coexist more often than they are described as doing, and the combination is a common reason treatment appears to underperform.
Root and generalised neuropathy together
A patient with diabetic neuropathy who develops a nerve root problem has two processes producing overlapping symptoms. Treating the root alone leaves the background neuropathy, and the partial improvement gets interpreted as the diagnosis being wrong. An electrodiagnostic study can identify both and indicate the relative contribution of each, which is precisely the situation where it earns its cost. The companion page is peripheral neuropathy.
Root and entrapment together
Cervical radiculopathy alongside carpal tunnel syndrome is a well-recognised combination, and surgery on the wrist alone in that situation produces partial relief that disappoints. Establishing both before intervening is the point of a study rather than a formality preceding one.
When weakness is not a root at all
Weakness without a matching sensory pattern points away from a root and toward the muscle itself or the junction between nerve and muscle, as in myasthenia gravis. The Muscular Dystrophy Association publishes patient material across that wider neuromuscular group. Electromyography contributes directly to that distinction, which is why the examination precedes the study rather than the study being ordered on a symptom.
Why one accredited laboratory over time helps
Radiculopathy often needs a second study, either to establish whether a deficit is recovering or to document progression. A comparison between two studies performed by the same laboratory on the same equipment is interpretable; one spanning two organisations introduces variables that weaken it. Both CNS offices hold the accreditation independently, described on the accreditation page.
06Sciatica care across Southern Nevada
Both CNS offices carry a full accredited electrodiagnostic laboratory, so evaluation and testing happen at whichever address is the shorter drive. Where a surgeon or an interventional pain specialist becomes involved later, a locally performed and accredited study makes that referral straightforward.
Sciatica neurologist Henderson NV and Green Valley
Patients seeking a sciatica neurologist Henderson NV attend the West Horizon Ridge Parkway office, just off the 215 Beltway. A sciatica neurologist Green Valley Henderson residents can reach quickly is almost always at that address, and it holds the same accreditation as the Las Vegas site.
Sciatica neurologist Summerlin and the west valley
A sciatica neurologist Summerlin patients can reach most easily works from West Flamingo Road, which the 215 and Summerlin Parkway feed toward. Consultations, nerve conduction studies and electromyography are all performed there.
Sciatica neurologist North Las Vegas and the northwest
A sciatica neurologist North Las Vegas patients need is at whichever of the two offices is the shorter drive, following the consolidation from a wider footprint into two fully equipped sites. We will not imply a third location exists.
Sciatica neurologist Southern Nevada: where this fits alongside other specialties
A sciatica neurologist Southern Nevada patients see is frequently one part of a group that includes a primary care physician, sometimes a physiotherapist, and sometimes a surgeon or interventional pain specialist. The neurological contribution is specific: establishing which root, whether function is being lost, and how severe it is, documented to a standard the other clinicians can rely on. Where a workers' compensation or injury claim is involved, that documentation carries additional weight, and the practice's medico-legal service line handles those evaluations to the same standard. Coverage and any prior authorisation are verified before your appointment, with detail on the insurance page.
Nerve Root and Nerve Guides
7 in-depth guidesThis hub covers radiculopathy and sciatica at CNS. The guides below go deeper on the specialist evaluation, on the study that establishes which root is affected, and on the conditions that produce overlapping symptoms. Start with the guide matching what has already been said to you rather than with the word sciatica.
Start Here — Cornerstone Guides
Radiculopathy specialist evaluation
What a neurological assessment establishes that a scan report does not.
Read the guide → TestingEMG and nerve conduction studies
Function rather than anatomy: which root, how badly, and how recently.
Read more → OverlapPeripheral neuropathy
A background process that can mask a root problem and blunt its treatment.
Read more →Browse by Category
The evaluation
Conditions that overlap
The standard behind the report
The Complete Index — every guide in this hub
Five board-certified physicians
Leo Germin, M.D., FAANEM, founder and medical director, triple board-certified in Neurology and Vascular Neurology through the ABPN and Neuromuscular Medicine through the ABEM, with subspecialty certification in Neurosonology and Neuroimaging. Anup Panduranga, M.D., fellowship-trained in epilepsy. Eric Gutglueck, M.D., neuromuscular medicine and neuromuscular ultrasound. Jessica A. Knirk, M.D., general adult neurology with Botox for chronic migraine. William Lujan, M.D., broad general adult neurology.
Four advanced practice providers
Fara Tan, APRN, MSCN, a Multiple Sclerosis Certified Nurse through the Multiple Sclerosis Nurses International Certification Board. Lindsey Evans, PA-C, general neurology and electromyography. Terra Fonseca, PA-C, a surgical and vascular background applied to general adult neurology. Alissa Nakamura, PA-C, board-certified through the NCCPA, with three years in pain management that transfer directly to nerve-injury and neuropathy questions.
Spread, not headcount
A referral that lands somewhere without neuromuscular or epilepsy depth often becomes a second referral, and each handoff adds weeks. Here an ambiguous nerve study can be reviewed by a neuromuscular specialist and an ambiguous EEG by a fellowship-trained epileptologist without the patient leaving the practice. Full biographies are on the providers page.
The Bottom Line
A scan showing a disc is not the same as a nerve that is affected. Ask which root, whether function is being lost, and how severe it is, because those answers decide whether this needs time or needs a surgeon.
Frequently Asked Questions
Is sciatica the same as radiculopathy?
Not quite. Sciatica describes pain travelling down the back of the leg. Radiculopathy is the usual underlying cause: a nerve root irritated or compressed near the spine. Sciatica names the symptom, radiculopathy names the diagnosis, and the distinction matters because other things also send pain down a leg.
My MRI showed a bulging disc. Is that the cause?
Not necessarily. Disc changes appear routinely in people with no pain at all and become more common with age. Where a scan finding sits at a level that does not match the examination it is probably incidental. An electrodiagnostic study tests whether a nerve is actually affected.
What does a nerve study add if I have already had a scan?
Imaging shows anatomy; the study shows function. It establishes whether a root is genuinely affected, at which level, whether the change is recent or long-standing, and whether nerve fibres are being lost. It also distinguishes a root problem from a peripheral nerve or a generalised neuropathy.
Does severe pain mean severe nerve damage?
No, and the two are measured separately. Severe pain with a normal examination and intact nerve function generally has a good outlook. Modest pain with measurable weakness and fibre loss is more significant despite feeling less dramatic, and treatment decisions follow function rather than pain intensity.
Will I need surgery?
Most radiculopathy improves without it. A substantial proportion of disc-related root problems settle over weeks to months. Surgery enters the conversation where weakness is progressing, where a documented deficit is not recovering, or where pain remains disabling after a reasonable trial of conservative management.
Does CNS perform spinal surgery or injections?
No. The practice is medical and diagnostic. It does not perform spinal surgery, epidural or facet injections, or run an interventional pain programme. Where either is indicated the referral is made with the accredited report attached so severity is documented rather than described.
When is leg pain an emergency?
Loss of bladder or bowel control, numbness in the saddle area, weakness affecting both legs, or weakness that is rapidly progressing. Also fever with back pain, or back pain in someone with a history of cancer. Those warrant emergency assessment rather than an appointment.
Why has my numbness not gone even though the pain has?
Because nerve fibres recover slowly. Pain frequently improves faster than numbness, and numbness faster than weakness, with recovery measured in months. Some numbness can persist after the underlying problem has resolved, which reflects how nerves heal rather than a treatment failure.
How this page was sourced
Practice facts here come from Clinical Neurology Specialists directly: the electrodiagnostic accreditation held at both addresses, the exemplary-status designation, the two neurologists focused on neuromuscular medicine, and the absence of spinal surgery and interventional pain procedures from the scope. Clinical context is sourced to the organisations below.
The comparison table describes what each investigation answers and is not a substitute for clinical judgement. No recovery rates or surgical success figures appear, because they vary by level, severity and population. No outcome is promised. Scope is adults 18 and older, medical and diagnostic rather than surgical.
References
- American Association of Neuromuscular & Electrodiagnostic Medicine — laboratory accreditation and electrodiagnostic study standards.
- Muscular Dystrophy Association — patient information on neuromuscular disorders.
- National Institute of Neurological Disorders and Stroke — the reference catalogue of nervous-system disorders.
This page is for general education about adult neurological care and is not medical advice, a diagnosis, or a treatment recommendation. It does not create a physician-patient relationship. Adults 18 and older. For an active stroke, a first-time or prolonged seizure, sudden severe headache, sudden weakness, sudden vision loss, or a head injury with loss of consciousness, call 911 or go to the nearest emergency department. Speak with a qualified clinician about your own circumstances.