Cervical Radiculopathy vs. Shoulder Pain: Neck Nerve or Rotator Cuff?

A pinched C5 nerve and a rotator-cuff problem can both cause pain over the shoulder and weakness when lifting the arm. That overlap is why a cervical MRI finding—or a shoulder MRI finding—cannot decide the diagnosis by itself.

The practical task is to determine whether the dominant pattern comes from a nerve root in the neck, a structure in the shoulder, or both. The answer comes from making the history, examination, and selective testing agree.

Quick Answer: Neck Nerve or Shoulder?

Cervical radiculopathy becomes more likely when pain begins near the neck or shoulder blade and travels down the arm with tingling, numbness, reflex change, or weakness across more than one shoulder movement. A rotator-cuff or other shoulder disorder becomes more likely when shoulder motion reproduces the pain, movement is restricted, and symptoms remain centered around the shoulder or upper arm.

There is no perfect symptom boundary. Shoulder pain can spread toward the neck or arm, and cervical nerve pain can be felt mainly over the shoulder. The neck and shoulder must be assessed together when the pattern is uncertain.

Cervical Radiculopathy vs. Shoulder Pain at a Glance

Clue	Leans more toward cervical radiculopathy	Leans more toward a shoulder or rotator-cuff problem
Pain route	Neck or shoulder blade into the arm; may extend below the elbow or into the hand	Shoulder or outer upper arm; often remains above the elbow
Sensation	Burning, electric, tingling, or numb	Deep ache, sharp pain, catching, or pain with movement
Common triggers	Neck position, coughing or sneezing, prolonged cervical posture	Reaching overhead, lifting away from the body, reaching behind the back, lying on that shoulder
Weakness pattern	May involve shoulder plus biceps, triceps, wrist, or hand muscles in a root distribution	Often concentrated in a particular shoulder movement, with pain limiting effort
Reflexes and sensation	May show a matching reflex or sensory difference	Usually do not create a cervical root-pattern reflex or sensory change
Range of motion	Neck motion may change the arm symptom; shoulder motion can be preserved	Active or passive shoulder motion may be painful or restricted, depending on the disorder

These are weighted clues, not a self-diagnostic checklist. A systematic review of cervical and shoulder overlap concluded that careful examination is essential because imaging may be misleading in either region.

What Does Cervical Radiculopathy Feel Like?

Cervical radiculopathy occurs when a nerve root in the neck is irritated or compressed. Common causes include a disc herniation or narrowing from bone and soft-tissue changes around the nerve exit opening, called the foramen.

Possible features include:

• pain near the neck or inside edge of the shoulder blade that travels into one arm;
• burning, electric, or shooting discomfort;
• tingling or numbness in part of the arm or hand;
• weakness across a set of muscles supplied by the same root; and
• a reduced reflex that fits the same level.

Neck pain may be mild or absent. Some people notice mostly shoulder or arm pain. Others notice numbness or weakness more than pain.

C5 radiculopathy is a particular diagnostic trap. It can cause pain near the top or outer shoulder and weakness when lifting the arm away from the body, which resembles a rotator-cuff problem. The examination looks beyond that one movement for deltoid weakness, a C5–C6 biceps-reflex change, C6-pattern biceps or wrist-extension weakness, altered sensation, and symptoms that connect with the neck or extend through the arm.

What Does Rotator-Cuff or Shoulder Pain Feel Like?

“Shoulder pain” includes several diagnoses rather than one condition. Rotator-cuff tendinopathy or tearing, bursitis, arthritis, adhesive capsulitis, biceps disease, and acromioclavicular-joint problems can produce different patterns.

A shoulder source becomes more plausible when:

• reaching overhead or away from the body reliably hurts;
• reaching behind the back is limited;
• lying directly on the shoulder is painful;
• the shoulder catches or has a painful arc of motion;
• passive shoulder motion is restricted, as may occur with arthritis or frozen shoulder; or
• weakness is concentrated in a shoulder movement and other neurological findings are absent.

Pain from the shoulder commonly reaches the outer upper arm. It can refer toward the neck and can occasionally travel farther, so “pain above the elbow” is not a hard rule. Likewise, night pain can support a shoulder problem but is not exclusive to one diagnosis.

Why C5 Radiculopathy and Rotator-Cuff Disease Look So Similar

Both conditions can affect the ability to lift the arm. Pain can inhibit strength even when a muscle or nerve is structurally intact, while a true nerve or tendon problem can create objective weakness. A quick strength test therefore needs interpretation: was effort limited by pain, did several muscles in one nerve-root pattern weaken, or did a specific tendon movement fail?

The same age group may also have both cervical degeneration and shoulder disease. Treating only the neck can leave a symptomatic shoulder problem behind. Treating only the shoulder can leave a cervical nerve deficit unexplained.

The safest question is not “Which scan looks worse?” It is “Which abnormality reproduces and explains the entire clinical pattern?”

Which Symptoms Suggest the Problem Is More Than a Shoulder?

Tingling, numbness, a reflex change, or weakness outside a single shoulder movement raises concern for a cervical or peripheral nerve problem. Pain that begins at the neck or shoulder blade and follows a route into the forearm or hand adds weight to that pattern.

Hand clumsiness, balance difficulty, leg stiffness, falls, or symptoms in multiple limbs are different warning signs. They may indicate cervical myelopathy—spinal-cord dysfunction rather than an isolated nerve-root or shoulder problem—and deserve prompt assessment.

Hand numbness can also come from the wrist or another peripheral nerve. The carpal-tunnel-versus-cervical-radiculopathy guide explains how a second nerve location changes the evaluation.

How Does a Clinician Separate Neck From Shoulder Pain?

The most useful evaluation does not ask the patient to choose a body part before the examination begins.

History

The clinician maps where the pain begins and ends, what feels numb, which task reveals weakness, and whether neck or shoulder position changes the familiar symptom. Sleep, overhead use, dexterity, gait, trauma, and symptom progression help define urgency and likely source.

Cervical and Neurological Examination

The examination assesses neck motion, strength across multiple arm and hand muscle groups, sensation, and reflexes. Selected clinician-performed maneuvers can raise or lower suspicion for a cervical nerve root. A 2026 diagnostic review found sparse, very-low-certainty evidence for these tests, so no single maneuver should decide the diagnosis.

Shoulder Examination

Active and passive motion are compared. The examiner evaluates pain and strength in several planes and looks for joint stiffness, tendon-pattern weakness, tenderness, and scapular mechanics. A painful maneuver is interpreted within the full shoulder examination rather than as proof of one tear.

Tests That Help When the Pattern Remains Unclear

In one large diagnostic study, the Arm Squeeze Test showed promise in distinguishing cervical nerve-root pain from several shoulder disorders. It remains a clinician-applied clue—not a home test or a replacement for a complete examination. EMG or other nerve testing may help when the question includes a cervical root, a peripheral nerve, or another nerve or muscle problem. A carefully selected diagnostic injection can sometimes add information, although temporary relief still needs clinical interpretation.

What Can MRI Show—and What Can It Not Show?

A cervical MRI can show disc herniation, narrowing at a nerve exit opening, and nerve-root compression. A shoulder MRI or ultrasound can show rotator-cuff, biceps, bursal, and other soft-tissue findings. Neither image automatically identifies the pain generator. The ACR cervical imaging criteria and ACR shoulder imaging criteria both organize imaging around the clinical question rather than one symptom alone.

Asymptomatic degenerative findings are common. A cervical abnormality becomes meaningful when it matches the side, level, pain route, strength, sensation, and reflex findings. A rotator-cuff finding becomes meaningful when it matches the shoulder examination and functional complaint.

Imaging is most useful after the clinical question is defined:

• Is there a progressive neurological deficit?
• Does the examination localize a cervical root?
• Is shoulder motion mechanically restricted?
• Is there a traumatic injury or meaningful loss of strength?
• Would the result change treatment?

If the answer is unclear, scanning both regions can create two impressive reports and no diagnosis.

Does Treatment Differ?

Yes. Many cervical radiculopathy and shoulder conditions begin with nonsurgical care, but the exercise strategy, injection target, and surgical options are different.

For cervical radiculopathy, care may include activity guidance, diagnosis-specific therapy, and clinician-directed medication. A cervical injection may be considered for selected patients. Surgery enters the discussion when a matching structural target causes persistent disabling symptoms or progressive neurological loss. Depending on the anatomy, options may include cervical foraminotomy, cervical disc replacement, or ACDF.

Shoulder treatment depends on whether the issue is tendon irritation, tearing, stiffness, arthritis, instability, or another problem. Therapy and injections should be directed to that diagnosis. A cervical operation does not repair a rotator cuff, and shoulder treatment does not decompress a cervical nerve.

When both areas are abnormal, the sequence should follow the dominant symptoms, neurological risk, expected benefit, and the finding that has the best agreement with the examination.

When Is Shoulder or Arm Pain Urgent?

Arrange prompt evaluation for:

• new or progressive arm or hand weakness;
• increasing loss of dexterity;
• new balance trouble, gait change, falls, or leg stiffness;
• symptoms spreading to multiple limbs; or
• severe pain or functional loss after trauma.

Call 911 for shoulder or arm discomfort accompanied by chest pressure, shortness of breath, sweating, nausea, fainting, or another possible heart-attack pattern; the CDC lists these and other heart-attack warning signs. Sudden face droop, speech difficulty, vision change, severe imbalance, or one-sided weakness or numbness may indicate stroke and also requires emergency care; see the CDC stroke warning signs.

What to Bring to an Evaluation

Bring the actual cervical and shoulder images when available, not only the reports. Note whether the pain begins at the neck, shoulder blade, or shoulder; whether it crosses the elbow; which fingers feel different; and which specific task reveals weakness. A short timeline of prior therapy, injections, and their effect is more useful than a list of treatments without response.

If neck and shoulder findings conflict, a spine consultation can clarify whether a cervical source is plausible and whether another specialist should be involved. The goal is not to claim every shoulder symptom as a spine problem. It is to make sure a treatable nerve or spinal-cord pattern is not missed.

The Bottom Line

Pain with shoulder motion leans toward a shoulder source. Neck-to-arm pain with numbness, reflex change, or broader weakness leans toward cervical radiculopathy. C5 nerve and rotator-cuff patterns overlap enough that one symptom, one maneuver, or one MRI cannot safely decide the issue.

Examine both regions, correlate any imaging, and treat the diagnosis that best explains the current function and neurological findings.

Sources

• Katsuura et al.: overlapping cervical-spine and shoulder pathology systematic review
• Gumina et al.: Arm Squeeze Test diagnostic study
• Thoomes et al.: 2026 diagnostic-accuracy review of cervical radiculopathy examination tests
• American College of Radiology: cervical pain or cervical radiculopathy imaging criteria
• American College of Radiology: chronic shoulder pain imaging criteria
• Centers for Disease Control and Prevention: heart-attack signs and symptoms
• Centers for Disease Control and Prevention: stroke signs and symptoms

This article provides general education, not a diagnosis or personal treatment plan. An individual evaluation should integrate symptoms, a neck and shoulder examination, medical history, and selective testing.