Bones, Joints & Pain

Shoulder Pain and Rotator Cuff Problems

Pain with reaching, lifting or sleeping on the affected side. The shoulder is the most mobile joint in the body, and that mobility comes at the cost of stability: which is why it is so often the source of trouble.

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Reviewed by Aaya Hakeem, Physiotherapist, PHY0002237920. Last reviewed 07/09/2026.

Understanding It

What Is Going On

The rotator cuff is a group of four muscles and their tendons that hold the ball of the shoulder joint centred in its shallow socket and control movement of the arm.

Most shoulder pain involves these tendons: irritated, overloaded, degenerative, or partially torn. Related problems include bursitis, where the fluid-filled sac that cushions the tendons becomes inflamed, and impingement, where structures are compressed as the arm lifts.

Tendon changes on a scan are extremely common in people over 50 who have no pain at all, so imaging findings need to be interpreted alongside symptoms rather than on their own.

How does it usually present?
  • Pain on the outside or front of the shoulder, sometimes referring down the upper arm
  • Pain reaching overhead, behind the back, or out to the side
  • Difficulty sleeping on the affected side: often the most disruptive symptom
  • Weakness lifting or carrying
  • A painful arc partway through raising the arm
  • Clicking or catching sensations
  • Gradual onset, or onset after a specific lift or fall

When to Act

When to Seek Help

See a physiotherapist if pain persists beyond two to three weeks, is disturbing sleep, or is limiting work or activity.See your GP or a physiotherapist promptly if you cannot lift your arm at all after a fall or injury, or you have significant sudden weakness: this may indicate a substantial tear.

Seek emergency care

Seek emergency care immediately if you have:

  • Shoulder or arm pain with chest tightness, shortness of breath, sweating or nausea — this can indicate a cardiac event and needs urgent assessment
  • An obvious deformity of the shoulder after injury — which may indicate dislocation or fracture
  • A red, hot, swollen shoulder with fever — which may indicate joint infection

Causes & Risk

What Causes It and Who Is at Risk

Common contributors include repetitive overhead activity at work or in sport, a sudden increase in load or training, a fall onto an outstretched arm, and age-related tendon change. Risk rises with age, diabetes, smoking, and previous shoulder injury.

Frozen shoulder is a distinct condition with a different course: see our frozen shoulder page if your main problem is stiffness rather than pain on movement.

How We Help

How Our Team Can Help

Our physiotherapists assess which structures are involved, how the shoulder blade and neck are contributing, and what load the tendon is currently tolerating. Rotator cuff problems generally respond to progressive loading, and the skill is in pitching that load correctly and progressing it at the right rate.

Where the presentation suggests a significant tear or another problem requiring imaging or specialist review, we refer back to your GP.

Starting Out

What to Expect at Your First Appointment

Your clinician will ask how it started, what movements hurt, and how it is affecting sleep and daily activity. They will examine shoulder and neck movement, test the rotator cuff muscles, and screen for the warning features above.

You will receive an explanation, initial treatment, and a home program. Rotator cuff rehabilitation usually takes months rather than weeks, and your clinician will be upfront about that timeframe.

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Frequently Asked Questions

Do I need a scan?
Not usually at first. Scans commonly show tendon changes in people without pain, so results are interpreted alongside your symptoms and examination.
How long will it take?
The underlying rotator cuff problem typically needs a consistent program over two to three months or more to improve, however, lifestyle changes and activity modifications give immediate relief of symptoms.
Should I rest it completely?
Generally no. Complete rest tends to make shoulders stiffer and weaker. The aim is to modify activity while maintaining movement.
Why does it hurt most at night?
Lying on or across the shoulder compresses irritated structures. Adjusting sleep position, sometimes with a pillow supporting the arm, often helps. Our physiotherapists can provide guidance on optimal sleeping positions to reduce overnight pain.
Do I need surgery?
Most rotator cuff problems are managed without surgery. Your GP or a specialist would make that call, usually only after a proper trial of rehabilitation.

Reviewed by Aaya Hakeem, Physiotherapist, PHY0002237920. Last reviewed 07/09/2026.

This page provides general information only and is not a substitute for individual clinical advice.