How do I know which shoulder problem I have?
The most useful check is external rotation: tuck your elbow into your side and turn your hand outwards, away from your stomach. If that movement is genuinely blocked — including when someone else moves the arm for you — that suggests a frozen shoulder. If it hurts but the movement is there, it is more likely rotator cuff pain. The two are managed quite differently.
Should I rest it or use a sling?
Neither. Immobilising a painful shoulder leads to stiffness that is considerably harder to treat than the original problem. Keep it moving gently within comfort, modify what aggravates it, and start strengthening as the pain allows.
Do I need a scan?
Usually not. Rotator cuff tears are found in a large proportion of pain-free people over 60, so a tear on a scan does not prove it is causing your symptoms — and being told about one tends to make people use the arm less, which is unhelpful. Imaging is worthwhile after trauma, or where surgery is genuinely being considered.
Would surgery fix it?
For the commonest type of shoulder pain, probably not. Keyhole decompression surgery performed no better than a placebo operation in good-quality trials, and exercise achieves comparable results. Surgery has a real role for large traumatic tears in younger people, recurrent dislocation and advanced arthritis — but it is not the default answer.
What can I do about the night pain?
Three things that genuinely help: sleep propped slightly upright, support the affected arm on a pillow so it is not hanging, and put a pillow behind your back to stop you rolling onto it. Time your painkillers for bedtime rather than earlier in the evening.
How long will it take?
Three to six months for most rotator cuff pain, with proper exercise, and the majority never need surgery. Give a strengthening programme a full three months before deciding it has not worked — improvement is gradual and rarely linear.
Could shoulder pain be my heart?
Occasionally, yes — which is why we ask. Pain in the left shoulder or arm brought on by exertion and relieved by rest, particularly with breathlessness, sweating or nausea, needs cardiac assessment rather than physiotherapy. Pain that changes with how you move the arm is far more likely to be musculoskeletal.
Why does my diabetes matter?
Because it substantially increases the risk of frozen shoulder — and frozen shoulder is sometimes the first thing that leads to a diabetes diagnosis. We check HbA1c and thyroid function where a frozen shoulder is likely, since both associations are strong and both are frequently undiagnosed.