Why does my shoulder hurt when I raise my arm?

What the timing can suggest

The point at which reaching hurts helps organize the examination.

Pain location and timing narrow the questions. They do not settle the diagnosis because shoulder conditions overlap, and the cervical spine or nervous system can sometimes produce symptoms around the shoulder or arm.

The language of impingement

“Something is being pinched” is often too simple an explanation.

The word impingement has traditionally suggested that the acromion or a spur repeatedly compresses the rotator cuff and bursa. Contact and compression occur in a moving shoulder, but a painful test does not prove that abnormal bone-on-tendon pinching is the primary cause.

Acromial shape and spurs do not consistently match pain, and rotator cuff changes are common in people without symptoms. Pain can improve as strength, load tolerance, sleep, and movement options improve even though bone shape has not changed. Long-term placebo-controlled trials have also found no important benefit from surgery intended only to create more subacromial space for persistent nontraumatic pain.

That does not mean surgery is never appropriate. Acute traumatic tears, instability, advanced joint disease, and other structural problems follow different pathways. It means “pinching” alone is usually not a complete explanation for nontraumatic pain with reaching.

The examination matters more than the label

What a useful shoulder evaluation should clarify.

The 2025 rotator cuff tendinopathy clinical practice guideline recommends combining a detailed history with active and passive motion, objective strength assessment, and a cervical screen when appropriate. Special tests can contribute, but the examination should not depend on one positive maneuver.

1. 01

   Define what changed.

   A fall with immediate weakness is approached differently from an ache that appeared after a sudden increase in swimming, pressing, throwing, or work volume.

2. 02

   Compare active and passive movement.

   Preserved passive motion with difficulty actively lifting raises different questions than restriction in both. The comparison forms a hypothesis; it does not make the diagnosis by itself.

3. 03

   Measure strength and load response.

   The examiner considers force, pain, side-to-side or task-related deficits, and whether the familiar symptom appears—not merely whether one test is “positive.”

4. 04

   Screen the neck and neurologic system when indicated.

   Sensation, reflexes, myotomal strength, coordination, and symptom response to neck movement help identify a possible cervical or nerve-root contribution.

5. 05

   Recreate the activity that matters.

   A slow arm raise is not a tennis serve, swim stroke, heavy press, repeated work reach, or overhead task under fatigue. The relevant task should guide the progression.

The MRI deserves context

A rotator cuff finding is not automatically the whole explanation.

Imaging is valuable when it answers a question that may change management: suspected fracture or dislocation, a substantial traumatic tear, advanced arthritis, calcific tendinopathy, an unclear presentation, surgical planning, or symptoms that are not improving as expected.

Imaging findings and pain do not match perfectly. In a 2026 population-based study, 602 Finnish adults ages 41–76 received clinical examinations and MRI of both shoulders. MRI-defined rotator cuff abnormalities—including tendinopathy and partial- or full-thickness tears—were present in 96% of shoulders without current symptoms and 98% of symptomatic shoulders.

FIMAGE population study, ages 41–76. Findings included tendinopathy and partial- or full-thickness tears. This comparison does not make every tear incidental; it shows why imaging must be interpreted in context.

For an otherwise typical, nontraumatic presentation of suspected rotator cuff tendinopathy, the 2025 guideline advises against imaging simply to confirm the diagnosis during initial management. If symptoms do not meaningfully improve after an appropriate nonsurgical plan—generally within a maximum of about 12 weeks in that guideline—imaging or specialist assessment may become more useful. Major trauma, deformity, pronounced weakness, rapidly worsening function, or suspected fracture or dislocation can justify a different timeline.

• X-rays help assess bone injury, arthritis, alignment, and calcification.
• Diagnostic ultrasound can evaluate the rotator cuff dynamically and has diagnostic properties similar to MRI for many cuff disorders when performed by an appropriately trained clinician.
• MRI provides a broader view of the cuff, muscle quality, joint, labrum, bone, and other structures when that information may change a decision.

Build a shoulder that can reach again

Rehabilitation should progress from symptom control to useful capacity.

The 2025 guideline places active rehabilitation at the center of care for rotator cuff tendinopathy. Programs may use motor-control work, resistance training, or both, at different loads. There is no single best exercise for every painful shoulder; the plan should match the dominant limitation and progress toward the person's actual demands.

• Adjust the reactive load by changing range, resistance, speed, repetition, or frequency without unnecessarily shutting down all shoulder use.
• Restore the motion the task requires with active or assisted movement and selected mobility work when stiffness or guarding is limiting useful range.
• Build rotator cuff and shoulder-girdle strength from a tolerable starting range toward pulling, pressing, elevation, and sustained control.
• Add endurance, speed, and force transfer according to the needs of work, swimming, tennis, pickleball, golf, lifting, or another overhead activity.
• Return to the real task by reproducing its range, load, repetition, fatigue, and decision-making—not stopping at a light clinic exercise.

Movement assessment and sports rehabilitation can make that progression more specific when the goal involves repeated overhead work, speed, power, or whole-body force transfer.

The role of hands-on care and dry needling

Short-term relief should create an opportunity to progress.

Manual therapy to the shoulder, upper limb, cervical region, or thoracic region may help reduce pain in the short term for a selected person. Its value is not that it permanently “puts the shoulder back in place.” A useful response should improve a meaningful movement or make loading more manageable.

Dry needling may be considered when a reproducible muscle-related component contributes to pain, guarding, or limited movement. Evidence for its added value in subacromial pain is mixed. It should not be presented as a stand-alone correction, a way to repair a torn tendon, or a replacement for progressive rehabilitation.

Use the during-and-next-day response

Can you keep lifting or playing while the shoulder improves?

Complete rest is not automatically necessary. Some people can continue with a modified range, lighter load, slower tempo, fewer repetitions, reduced serving or throwing volume, or more recovery. Stable and tolerable symptoms that settle without progressive weakness, loss of motion, major sleep disruption, or worsening next-day function may allow modified training.

Escalating pain, declining force, increasing guarding, a growing loss of range, or a meaningful next-day reduction in function indicates that the dose or the working diagnosis should be reconsidered. There is no universal rule that every exercise must be completely pain-free, and there is no reason to force an irritable shoulder through steadily worsening pain.

Common questions

Shoulder pain, rotator cuff findings, and returning overhead.