Neck, back and limbs
Pinched nerve (radiculopathy)
Radiculopathy is the term for symptoms produced when a nerve root is compressed or irritated where it leaves the spine. Because each root carries sensation and power for a defined area, the symptoms appear along that distribution rather than at the spine itself — in the arm and hand for a cervical root, in the buttock, leg and foot for a lumbar one. The word describes the mechanism, not the cause; identifying what is compressing the root is a separate question.
Symptoms
Radicular symptoms follow the territory of a single nerve root, which is what distinguishes them from more diffuse limb pain.
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Pain in a band
Travelling down the arm or the leg in a defined strip rather than spreading over the whole limb. Frequently described as sharp, burning or electric.
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Numbness and tingling
In the specific area that root supplies — a particular pair of fingers, or a strip along the calf and part of the foot.
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Weakness
Affecting the muscles that root controls, which is why difficulty gripping, lifting the foot or pushing off the toes each point to different levels.
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Loss of reflexes
A diminished reflex in the affected limb is an objective sign and one of the findings an examination looks for.
Causes
Several structures can compress a root, and they differ in how the symptoms behave over time.
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Disc herniation
Displaced disc material reaching the root, the most common cause in younger and middle-aged adults, and often the one with the most abrupt onset.
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Degenerative narrowing
Bone spurs and thickened ligament reducing the size of the opening the root passes through, which tends to develop gradually.
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Spondylolisthesis
One vertebra slipping forward on another, changing the space available to the roots at that level.
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Less common causes
Cysts, infection, inflammatory conditions and tumours account for a small proportion, which is why an atypical history is investigated rather than assumed.
Diagnosis
The task is to establish which root is affected and to distinguish a root problem from compression further along the limb.
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Examination
Testing sensation, power and reflexes against the known map of each root, together with manoeuvres that reproduce or relieve the symptoms.
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Electrodiagnostic testing
Electromyography and nerve conduction studies measure nerve function directly. They can separate radiculopathy from carpal tunnel syndrome or a peripheral neuropathy, which can produce overlapping symptoms.
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MRI
Shows the disc, bone and neural structures. Findings are interpreted against the examination, since structural changes are common in people with no symptoms.
Common questions
Is a pinched nerve the same as sciatica?
Sciatica is one form of it — lumbar radiculopathy affecting the roots that contribute to the sciatic nerve. Radiculopathy is the general term and can affect the neck as well as the low back.
How long does it take to settle?
Many cases improve substantially over several weeks to a few months. Symptoms that are not improving, or weakness that is increasing, are a reason to be reassessed.
Can the nerve be permanently damaged?
Prolonged or severe compression can cause lasting changes, which is why progressive weakness and numbness are treated as more urgent than pain alone.
Will I need surgery?
Most people do not. Surgery is generally reserved for progressive neurological deficit or for symptoms that remain disabling after an adequate trial of non-surgical care.
General reference information, and not advice about your own case. It may not reflect the most recent guidance or what is offered on a given day — call (201) 408-5151 to check.
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