Understanding Nerve Pain

You may have woken with a numb hand, felt pins and needles running down your arm, or noticed a burning, stabbing pain travelling from your back into your leg. When this happens, it is common to wonder:

Have I trapped a nerve? Does tingling mean the nerve is damaged? Why do I feel pain in my hand if the problem is coming from my neck? Will I need a scan? Can physiotherapy help?

Nerve-related symptoms can be confusing because the place where you feel them is not always where the problem begins. The nerve pathways supplying your hand connect back to your neck, while those supplying your foot connect back to your lower back. Irritation anywhere along a pathway may cause symptoms further away.

This article explains what nerve pain is, what different nerve symptoms may mean and the main places a nerve problem can develop.

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What is nerve pain?

“Nerve pain” is a general term for pain or unusual sensations linked to the nervous system. It can occur when a nerve is compressed, irritated, inflamed, sensitised or damaged.

Nerve-related symptoms can feel different from the dull ache of a sore muscle or joint. They may include:

• burning, shooting or electric-shock-like pain
• pins and needles or tingling
• numbness or reduced feeling
• unusual sensitivity to touch, heat or cold
• pain that travels along an arm or leg
• weakness, reduced grip or difficulty controlling a limb

One symptom alone cannot confirm nerve damage. Pins and needles after sitting awkwardly or sleeping on an arm usually settle once the pressure is removed. The pattern, duration and effect on strength help determine whether assessment is needed.

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Common questions about neuropathic pain

Does tingling mean I have permanently damaged a nerve?

Usually, no. Brief tingling often occurs when temporary pressure affects the nerve’s signals. Constant or recurring symptoms, especially with weakness, need assessment—but nerves can be irritated or sensitive without being permanently injured.

Is a “pinched nerve” actually trapped?

Not always. A nerve or nerve root may be compressed, inflamed or irritated. Scan findings also do not always match a person’s symptoms: some people have visible changes without pain, while others have significant symptoms with little change on imaging.

Why can a problem in my neck cause symptoms in my hand?

The nerves supplying your hand connect to nerve roots in your neck. Irritation near the beginning of this pathway can produce symptoms further along it. Similarly, lower-back irritation can cause symptoms in the leg or foot.

Can tight muscles press on a nerve?

Sometimes, but “a tight muscle trapping the nerve” is often too simple. Muscles may contribute to pressure or sensitivity, while the spine, joints, swelling and narrow spaces along the nerve may also need consideration.

Do I need a scan?

Not necessarily. Many problems can be identified from the history and physical examination. A scan or nerve-conduction test is more useful when the diagnosis is unclear, symptoms are worsening or the result would change treatment.

Can physiotherapy help?

Yes. Education, activity changes, movement and graded exercise can help many nerve-root irritations, entrapments and sensitive nerves. If an underlying condition or significant nerve injury is suspected, your physiotherapist may recommend medical or specialist review.

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Understanding the pathway of a nerve

The brain and spinal cord form the central nervous system. Nerve roots leave the spinal cord through openings between the bones of the spine. They connect within networks called plexuses, then continue into the arms and legs as peripheral nerves. Smaller branches reach the skin, muscles and joints.

In simple terms, the pathway is:

Brain and spinal cord → nerve roots → nerve networks → peripheral nerves → skin and muscles

For example, the median nerve involved in carpal tunnel syndrome is formed from nerve roots in the neck. It travels through the arm and forearm before entering the hand through the carpal tunnel at the wrist.

Think of this pathway like a power cable running from a power source to a light. A problem anywhere along the cable may affect the light at the other end. Similarly, hand symptoms may come from the wrist, but they can also begin further up the pathway.

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What happens when a nerve is irritated?

Nerves carry electrical messages. Sensory fibres carry information about touch, pain and temperature; motor fibres carry instructions to the muscles.

Pressure or inflammation can interfere with these signals. Mild irritation may cause intermittent tingling, while persistent irritation can produce pain or numbness. If motor fibres are affected, weakness, reduced grip or poor control may occur. Severe or prolonged compression can sometimes cause lasting sensory loss or muscle wasting, so progressive weakness should not be ignored.

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Where can a nerve problem begin?

1. At a nerve root near the spine

A problem where a nerve root leaves the spine is called radiculopathy. In the neck, this is known as cervical radiculopathy. In the lower back, it is called lumbar radiculopathy.

A disc bulge or herniation may irritate a nerve root. Age-related disc and joint changes can also reduce the available space, although these changes do not always cause pain.

A neck nerve-root problem may cause neck or shoulder-blade pain, arm or hand symptoms, numbness or weakness. A lower-back nerve-root problem may cause back or buttock pain, leg pain often called sciatica, foot tingling or leg weakness.

Each root is linked with certain areas of skin, muscles and reflexes. These patterns guide the assessment, although symptoms do not always follow a perfect textbook map.

2. Within a nerve network

Several nerve roots meet within networks called plexuses. The brachial plexus supplies the shoulder and arm; the lumbosacral plexus supplies the pelvis and leg.

Forceful stretch, trauma, sustained pressure, inflammation or another condition can affect a plexus. Because several nerves may be involved, pain, altered feeling or weakness can spread across a wider area rather than following one neat line.

3. Along a peripheral nerve

A peripheral nerve entrapment occurs when a nerve is compressed after leaving the spine, often where it passes through a narrow tunnel, around a bone or beneath a firm band of tissue.

Common examples include:

Condition	Nerve affected	Common site
Carpal tunnel syndrome	Median nerve	Wrist
Cubital tunnel syndrome	Ulnar nerve	Inner elbow
Radial tunnel syndrome	Radial nerve or one of its branches	Forearm
Tarsal tunnel syndrome	Tibial nerve	Inner ankle

Swelling, injury, prolonged positions, repetitive activity, joint changes, scar tissue or a naturally narrow space may contribute.

In carpal tunnel syndrome, pressure affects the median nerve at the wrist. Symptoms commonly involve the thumb, index and middle fingers and the thumb-side of the ring finger, and are often worse at night. Grip or fine hand tasks may become difficult. The little finger usually remains unaffected because it has a different nerve supply.

4. Around the nerve

Nerves slide past muscles, joints and connective tissues as the body moves. Swelling, scarring or reduced space around a nerve may make this movement uncomfortable.

The sciatic nerve, for example, passes through the deep buttock near several muscles. Irritation here can sometimes cause buttock and leg symptoms, although the lower back and the rest of the nerve pathway must also be assessed.

5. When a nerve becomes more sensitive

Sometimes there is no major ongoing compression, but the nerve responds more strongly than usual to movement or pressure. This is called increased nerve mechanosensitivity.

This can develop after injury, inflammation, surgery or ongoing irritation. Normal movements may reproduce tingling, pulling or pain. This does not mean the pain is imagined or that movement is causing further damage; the nerve has simply become easier to provoke.

6. When multiple peripheral nerves are affected

Peripheral neuropathy involves disease or damage affecting several peripheral nerves rather than one local compression point. Causes include diabetes, vitamin B12 deficiency, alcohol-related disease, chemotherapy, autoimmune or kidney disease, infections, inherited conditions and some medications.

It often affects the longest nerves first, so symptoms may begin in both feet, move up the legs and later affect the hands. This is sometimes called a “stocking and glove” pattern.

Burning pain, numbness, reduced awareness of injury, weakness and balance problems can occur. Treatment depends on the cause, so suspected neuropathy needs medical investigation rather than local treatment alone.

7. In the brain or spinal cord

Not every nerve-like symptom begins in a peripheral nerve. The brain and spinal cord can also cause changes in feeling, movement and coordination.

Pressure on the spinal cord in the neck may cause hand clumsiness, balance or walking changes, or symptoms on both sides. Other central nervous system conditions, including stroke and multiple sclerosis, can also alter sensation or strength. These symptoms need medical assessment and may require urgent care.

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How is the cause identified?

A physiotherapist will ask where the symptoms are felt, when they began, what changes them and whether there is weakness. The examination may assess sensation, strength, reflexes, coordination and movement of the spine and nearby joints. Specific tests may check how a nerve responds to movement or gentle pressure.

The aim is to work backwards from the symptoms:

Where you feel it → peripheral nerve → nerve network → nerve root → spinal cord or brain

No one finding gives the complete answer. The symptom pattern, history and examination are considered together before deciding whether early treatment, further testing or referral is needed.

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When should you seek urgent medical care?

Seek urgent help for:

• sudden facial drooping, arm or leg weakness, or difficulty speaking
• rapidly worsening weakness or loss of coordination
• new loss of bladder or bowel control
• numbness around the groin, buttocks or inner thighs
• severe symptoms affecting both legs
• neurological symptoms following significant trauma

Arrange a prompt assessment if numbness is persistent, weakness is progressing, muscles appear to be wasting, your balance is deteriorating or symptoms occur with unexplained fever, weight loss or a history of cancer.

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Final thoughts

There are different types of nerve pain. Nerve pain is not one condition with one treatment. It may begin near the spine, within a nerve network, along a peripheral nerve, in surrounding tissues or as part of a wider medical condition.

The important point is that where you feel the symptom is not always where the problem begins. A careful assessment helps identify the most likely source so that effective treatment can address the cause rather than focusing only on the painful or numb area.

This article provides general information and is not a substitute for individual medical advice. Seek assessment if you are concerned about pain, altered sensation, weakness or loss of coordination.

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Further reading

• Cervical Radiculopathy (Pinched Nerve) — American Academy of Orthopaedic Surgeons
• Carpal Tunnel Syndrome — American Academy of Orthopaedic Surgeons
• Peripheral Neuropathy — National Institute of Neurological Disorders and Stroke
• Cervical Spondylotic Myelopathy — American Academy of Orthopaedic Surgeons

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West Pennant Hills Physiotherapy @ Sports Injuries Centre

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