Neck pain radiating into the arm: why ordinary exercises do not always help

The pain starts in the neck, moves into the shoulder and travels down the arm, sometimes reaching the fingers. It may be accompanied by numbness, tingling, burning or electric shock-like sensations. Sometimes the arm feels weaker, or objects unexpectedly fall from the hand.

Many people assume that the problem must be in the shoulder or arm. However, the actual cause may be an irritated nerve in the neck.

Why can a neck problem cause pain in the arm?

Nerves travel from the neck into the shoulder, arm and fingers. When one of these nerves becomes irritated or has too little space, pain may be felt not only in the neck but also farther down the arm.

Possible causes include:

• a bulging or herniated disc;

• wear and tear or other age-related changes in the neck;

• narrowing of the space through which the nerve passes;

• irritation and swelling of the tissues around the nerve.

This condition is called cervical radiculopathy. You do not need to remember the medical term. The important point is that the source of the problem may be in the neck, even when the arm hurts much more than the neck itself.

Which symptoms may suggest that the problem comes from the neck?

Possible signs include:

• pain mainly affecting one arm;

• tingling or numbness in particular fingers;

• burning, shooting or electric pain;

• increased pain when turning or bending the head;

• reduced strength in the hand or arm;

• relief when placing the hand of the painful arm on top of the head.

Similar symptoms can also be caused by a problem in the shoulder, wrist or elbow. The diagnosis cannot therefore be based on one symptom or an MRI scan alone.

A physiotherapist examines the movement of the neck and shoulder, muscle strength, skin sensation and the way the arm responds to different positions.

Why are the symptoms sometimes worse when standing or sitting?

For some patients, the arm becomes much more painful as soon as they stand up or sit upright. The symptoms may decrease when they lie down.

This does not automatically mean that the neck vertebrae are being “compressed.” In an upright position, the muscles must support the head and shoulder girdle. A sensitive nerve may temporarily have difficulty tolerating this load.

When lying on the back, the neck and surrounding muscles can often relax more easily. Movement may therefore become more comfortable.

If almost every movement in standing or sitting makes the arm pain worse, the patient does not have to force it. The physiotherapist can begin the examination with the patient lying down and look for a movement that does not cause a clear worsening of the symptoms.

Pay attention not only to how much it hurts, but also to where it hurts

During treatment, we do not look only at the intensity of the pain. It is equally important to monitor where the symptoms are felt.

It is usually a positive sign when the pain disappears from the hand or forearm and remains only in the upper arm, shoulder or neck. This may indicate that the nerve is becoming less irritated.

An unfavourable response occurs when the pain travels farther down the arm after an exercise—for example, from the shoulder into the hand or fingers. Increasing numbness, tingling or weakness are also signs to stop.

The advice to “just push through the pain” is therefore not always appropriate for this type of problem.

What if ordinary movements make the symptoms worse?

The physiotherapist will usually try several gentle head movements and observe which movement makes the arm feel better.

Sometimes, however, every standard movement aggravates the symptoms. A movement may:

• increase the pain in the arm;

• meet a sharp and painful block;

• be possible only through a very small range;

• feel comfortable at first but become painful halfway through.

This does not mean that physiotherapy cannot help. Sometimes we first need to change the patient’s position and the way the movement is performed.

If pain occurs only at the end of the movement

Imagine that a patient can turn or tilt the head through part of the movement, but the pain begins to travel into the arm near the end.

There is no need to push farther. The physiotherapist stops the movement just before the painful point. The patient then presses the head very gently into the therapist’s hand without actually moving the head.

The effort remains gentle and controlled. After a few seconds, the patient relaxes and the movement is assessed again.

This technique may help the body experience the movement as less threatening and reduce protective muscle tension. The aim is not to “put a vertebra back into place,” but to create a safe and tolerable form of loading.

If pain occurs halfway through the movement

Sometimes a patient can begin a movement normally, but a sharp pain develops at a certain point. Once that point has been passed, the movement may become easier again.

The physiotherapist may ask the patient to move the head slowly while applying light resistance with the hand. The direction of the resistance can be gently changed during the movement.

To prevent unwanted turning of the head, the patient may be asked to keep looking at one fixed point, such as the ceiling.

This approach may help the muscles work together more effectively. In some patients, the movement then becomes smoother and less painful.

The result is not guaranteed. If the pain starts travelling farther toward the hand or fingers, or if numbness increases, the technique is stopped.

Use the traffic-light principle

The response to an exercise can be divided into green, amber and red.

Green light

The exercise appears suitable when:

• the pain in the arm decreases;

• tingling becomes less noticeable;

• the pain leaves the fingers or forearm and moves closer to the neck;

• head movement becomes easier;

• there is no lasting worsening after the exercise.

Amber light

Caution is required when:

• mild tension develops;

• there is moderate pain only in the neck;

• the symptoms return to their previous level shortly after the exercise;

• the pain does not travel farther down the arm.

The physiotherapist can then reduce the effort, the range of movement or the number of repetitions.

Red light

The exercise should be stopped when:

• the pain travels farther down the arm;

• numbness increases;

• new tingling develops in the fingers;

• the arm or hand becomes weaker;

• the worsening continues after the exercise.

Even an exercise that is generally considered helpful is not appropriate if it repeatedly makes a particular patient’s arm symptoms worse.

Can these techniques be performed independently?

The resistance techniques described above are intended to be used by a physiotherapist. The strength of the arm, sensation, neck movements and possible warning signs must be examined first.

Do not press forcefully against your own head, pull strongly on your neck or try to force your way through a sharp and painful restriction.

For home use, the physiotherapist may recommend simpler measures, such as:

• finding a position in which the arm settles;

• performing one or two safe movements;

• taking regular breaks during computer work;

• properly supporting the painful arm;

• continuing with gentle walking and suitable activity;

• performing simple exercises for the shoulders and shoulder blades.

Complete rest is usually unnecessary. The aim is to find an amount of movement that can be tolerated and then gradually increase it.

How can physiotherapy help?

Treatment does not consist of one isolated manual technique. Depending on the patient’s condition, it may include:

• an explanation of the possible cause of the symptoms;

• advice about sleeping, sitting, working and moving;

• gentle, controlled neck movements;

• soft manual treatment of the neck and upper back;

• careful unloading or gentle traction of the neck if the arm responds positively;

• exercises for the neck, shoulders and shoulder blades;

• rebuilding strength in the arm and hand;

• gradual return to work, sport and everyday activities.

The response of the patient matters more than the name of the treatment method. After a suitable treatment, the pain should decrease or at least not travel farther toward the hand and fingers.

Is an MRI scan always necessary?

No. MRI scans frequently show age-related changes and bulging discs in people who have no neck or arm symptoms at all.

A scan alone cannot always identify the cause of the problem. The MRI findings must be compared with the location of the pain, sensation, muscle strength and the findings from the physical examination.

An MRI scan and medical assessment are particularly important when:

• the arm or hand is becoming progressively weaker;

• the symptoms continue to worsen;

• the pain remains extremely severe;

• appropriate treatment does not produce the expected improvement;

• there are signs of a more serious condition.

When should you seek urgent medical attention?

Do not delay medical assessment if:

• the arm or hand is rapidly becoming weaker;

• you increasingly drop objects;

• your balance or walking pattern changes;

• weakness or unusual sensations develop in the legs;

• fine finger movements become more difficult;

• bladder or bowel problems develop;

• the pain began after a serious accident or fall;

• you also have a fever, chills or feel seriously unwell;

• you are losing weight without a clear reason;

• severe pain wakes you every night and does not change with your position;

• neck pain is accompanied by problems with speech, vision or coordination, or by severe dizziness.

These symptoms may have a cause other than an irritated nerve. Medical examination should come first in such cases.

Is surgery always necessary?

In most cases, treatment without surgery is tried first. For many patients, pain, tingling and numbness gradually decrease. Recovery may, however, take several weeks or months.

Surgery may be considered when:

• the arm or hand continues to become weaker;

• there are signs that the spinal cord is under pressure;

• the pain remains unbearable;

• carefully selected treatment does not help sufficiently;

• the examination and MRI findings indicate that surgery may be necessary.

The decision is not based only on the size of a disc herniation. The function of the arm, the development of the symptoms and the risk of damage to a nerve or the spinal cord are more important.

The main message

If an exercise causes the pain to travel farther down the arm, it is usually not sensible to exercise harder or perform more repetitions.

Sometimes it is better to:

1. Move from standing or sitting into a lying position.

2. Find a small movement that can be performed comfortably.

3. Stop before the pain starts travelling into the arm.

4. Use gentle resistance under the guidance of a physiotherapist.

5. Rebuild movement and loading step by step.

The aim of treatment is not to make the neck move farther at any cost. First, the movement needs to become safe and tolerable. The load can then be increased gradually.

At Salbar Fysiotherapie, we do not look only at the neck or an MRI scan. We also examine the strength and sensation of the arm, shoulder movement and the way the symptoms respond to different positions and movements.

Does your neck pain travel into your arm? Are you experiencing numbness, or do your usual exercises make the symptoms worse? A complete physiotherapy assessment is a sensible first step

By Boris Feldman, with AI assistance.