If you have diabetes, you are about FIVE times more likely to get a frozen shoulder than someone without it.
Roughly 1 in 7 people with diabetes develop it at some point, and about 1 in 3 people with frozen shoulder have diabetes.
It also tends to hurt more and take longer to settle. The good news is that the same treatments work. You just need to plan around one of them: the steroid injection raises your blood sugar for a few days.
Why diabetes and frozen shoulder go together
- High blood sugar over time stiffens soft tissue. Sugar binds to collagen and makes it less stretchy. The shoulder capsule is one of the places this shows up
- It’s a genuine cause, not just a coincidence. Genetic studies point to diabetes actually driving frozen shoulder
- Type 1 or type 2, insulin or tablets: the studies don’t show a clear difference in risk between them
- It often comes with other stiff-tissue problems, like trigger finger, Dupuytren’s contracture in the palm or carpal tunnel
With diabetes, frozen shoulder isn’t rarer or stranger. It’s just more likely, and slower.
What’s different for you
- More pain. Across the studies, people with diabetes consistently reported more pain than people without
- A longer course. Having diabetes for longer is linked with a slower recovery
- Both shoulders. It’s more likely to affect the other shoulder too, sometimes at the same time
- Same treatments. Injection, the right exercises and, if needed, a procedure. Nothing about the treatment plan is off-limits because of diabetes
Steroid injections and your blood sugar
- Expect your readings to rise within hours of the injection. The rise can last several days
- Tell whoever manages your diabetes BEFORE the injection, not after, especially if you use insulin
- Check more often for the first few days
- A high reading after an injection isn’t a sign your control has failed. It’s the steroid
- The injection is still worth having when pain is stopping you sleeping or doing your exercises. Planning ahead makes it safe to use
What helps
- Get assessed early. Longer symptoms before treatment predict a slower recovery
- Treat the pain first so you can move. See frozen shoulder treatment
- Gentle, regular exercise matched to how irritable the shoulder is. See frozen shoulder exercises
- Keep your overall diabetes care on track. It won’t reverse a frozen shoulder, but it matters for everything else, including healing if you ever need a procedure
- Watch the other shoulder. If it starts aching and stiffening, get it seen early rather than waiting
For the condition itself, see frozen shoulder: symptoms, stages and how long it lasts.
See a doctor soon if
- The shoulder is hot, red and swollen, with or without fever. Infection is more likely with diabetes
- Pain or swelling gets much worse in the days after an injection
- Your blood sugar stays very high for more than a few days after an injection
- You have numbness or weakness in the arm or hand
Get it checked if
- Shoulder pain and stiffness haven’t improved after 6 weeks
- Night pain is stopping you sleeping
- The other shoulder starts to stiffen
More likely, slower, same treatments. Plan the injection around your sugar, then use it.