Shoulder impingement

Also called Subacromial pain syndrome or Rotator cuff tendinopathy

Shoulder impingement is a common cause of shoulder pain. It happens when a tendon in the shoulder (part of the rotator cuff) rubs or catches on nearby tissue or bone as you lift your arm. It is often caused by overuse, such as repetitive overhead movements in sport or work, and is more common with age.

Last updated Nov 9, 2026

What it is

It usually gets better within a few weeks or months with rest, painkillers and exercises from a physiotherapist.

A steroid injection may help if pain continues. Surgery is only needed rarely.

Common signs

  • Pain when lifting the arm, especially overhead
  • Pain at night, especially when lying on the shoulder
  • Weakness in the arm
  • Pain that spreads down the outside of the upper arm

How it is usually diagnosed

  • Questions about symptoms and an examination
  • Sometimes an ultrasound, X-ray or MRI

Records worth keeping

Keeping these together makes each appointment easier, especially when you see a new doctor:

  • GP or physiotherapy notes
  • Ultrasound or MRI reports
  • Orthopaedic letters
  • Injection records

Questions to ask your doctor

  • Which exercises should I do?
  • Which movements should I avoid?
  • Would an injection help me?

When to get help right away

Call 112 or go to the nearest emergency department if you have:

  • Being unable to lift the arm after a fall or injury, or a hot, swollen shoulder with a fever: get urgent help the same day

This page is general information. It is not a diagnosis and does not replace a doctor who knows your history. Medfold keeps your records organised; it does not interpret them.

Sources