Why does my shoulder hurt?
Shoulders trade stability for range — they move further than any other joint and rely on muscle rather than bone to stay controlled. Most shoulder pain is a control and capacity problem in that muscular system, not damage to the joint itself.
Shoulder pain, in plain terms
Where and when it hurts narrows things down quickly. Pain through a specific arc of lifting means something different from pain that’s there all the time, and both differ from a shoulder that’s steadily losing range.
Pick whichever of these sounds most like yours. The answer is different for each, and the fix follows the cause.
Find your version
It hurts partway through lifting my arm
A painful arc, usually between shoulder and ear height, with full range either side of it. Rotator cuff compression.
It wakes me at night
Very common with cuff-related problems. Worth reading alongside the arc pattern above.
It’s getting stiffer every month
Progressive loss of range in every direction, including when someone else moves your arm, needs early assessment — there’s a treatment window.
It hurts in push-ups and planks
A loading problem in a joint being asked for bodyweight support it isn’t conditioned for.
Whichever version is yours, see a doctor first if
- The pain began after a fall, a crash, or a direct blow
- You have numbness, pins and needles, or weakness anywhere
- The area is hot, red, or swollen, or you have a fever
- The pain is worst at night and doesn’t ease in any position
- You have unexplained weight loss or a history of cancer
- Chest tightness, breathlessness, sweating, or jaw and arm pain — call emergency services
- You can’t lift the arm at all after a fall
These are uncommon, but they point to problems that movement work won’t touch and that get harder to treat the longer they wait.