In short
Frozen shoulder causes gradual, significant stiffness and pain that can take one to three years to fully resolve — knowing the expected timeline helps make sense of a frustratingly slow recovery.
Emergency if: Shoulder or arm pain comes with chest pain that feels tight or like squeezing, chest pain spreading to the arms, neck or jaw, or severe difficulty breathing: call emergency services now and do not drive yourself. Also go to an emergency department now if you injured your shoulder and cannot move your arm, or it looks out of place or has changed shape.
On your report
Fasting Glucose, TSH
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01
What's Happening in the Joint
Frozen shoulder, also called adhesive capsulitis, happens when the capsule of tissue surrounding the shoulder joint thickens and tightens, restricting movement. It typically develops without an obvious injury, though it can follow a period of not moving the shoulder much — after surgery, a stroke, or an unrelated injury that made the arm harder to use normally.
Diabetes is a known risk factor; the NHS says it is unclear why, and that regular diabetes check-ups matter. Thyroid problems are also linked. MedlinePlus says women aged 40 to 70 are most affected, but men can get it too.
02
The Three Stages
Frozen shoulder typically progresses through three overlapping stages. The 'freezing' stage brings gradually worsening pain and a slow loss of motion, lasting weeks to months. The 'frozen' stage has less pain but significant stiffness, making everyday tasks like reaching overhead or behind the back difficult, and can last several months to a year.
The 'thawing' stage is a gradual return of motion, which can take months to a couple of years on its own. Understanding this arc matters because frozen shoulder can feel like it's never going to improve during the frozen stage, when pain has eased but stiffness hasn't — knowing that thawing is the expected next stage can make a slow recovery easier to tolerate.
03
How It's Diagnosed
A physical exam showing significantly limited shoulder motion — both when someone tries to move the arm themselves and when a doctor moves it for them — is usually enough to diagnose frozen shoulder. That second part matters: in many other shoulder problems, a doctor moving the arm passively can achieve a fuller range than the person can on their own, while in frozen shoulder, motion is limited either way.
X-rays are sometimes used to rule out arthritis or other joint problems, and imaging is added mainly when the diagnosis is unclear or symptoms don't fit the typical pattern. Because diabetes and thyroid conditions are both linked to frozen shoulder, a doctor may check blood sugar and thyroid function if they haven't been checked recently — frozen shoulder is occasionally how a previously unrecognized case of either comes to light.
04
Treatment
Physical therapy focused on gentle stretching is the core treatment, aimed at maintaining and gradually improving range of motion without aggravating pain — pushing too hard, too fast tends to backfire. Anti-inflammatory medication and, for more significant pain, a corticosteroid injection into the joint can help, especially earlier in the freezing stage.
For the minority of cases that don't improve with these measures over many months, a procedure to stretch or release the tightened capsule — done under anesthesia or through a minimally invasive surgery — can speed recovery. Most people eventually recover close to full motion, even without these procedures, though it takes patience.
05
What to Expect
The full course of frozen shoulder commonly runs one to three years from start to resolution, which is longer than most people expect for a shoulder problem — setting that expectation early can prevent unnecessary frustration or a sense that treatment isn't working.
An orthopedist or physical therapist can guide treatment through each stage and help distinguish frozen shoulder from other shoulder problems, like a rotator cuff tear, that need a different approach.
Shoulder pain and stiffness: how fast to act
Routine — see a doctor
Shoulder pain and stiffness that does not go away, pain so bad it is hard to move your arm and shoulder, or shoulder pain that is getting worse or has not improved after 2 weeks: see a doctor. Keep moving the shoulder gently and do not make up your own strenuous exercises.
Same-day — call promptly
Sudden or very bad shoulder pain, you cannot move your arm, your arm or shoulder has changed shape or is badly swollen, pins and needles that do not go away, no feeling in your arm or shoulder, an arm or shoulder that is hot or cold to the touch, severe pain in both shoulders, or you feel feverish or unwell: get seen today. The NHS says these can be signs of something serious.
Emergency — act now
Shoulder or arm pain comes with chest pain that feels tight or like squeezing, chest pain spreading to the arms, neck or jaw, or severe difficulty breathing: call emergency services now and do not drive yourself. Also go to an emergency department now if you injured your shoulder and cannot move your arm, or it looks out of place or has changed shape.
Values mentioned in this story
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Sources
- Frozen Shouldermedlineplus.gov
- Frozen shoulder — NHSnhs.uk
- Shoulder pain — NHSnhs.uk
- Heart attack — NHSnhs.uk
- Dislocated shoulder — NHSnhs.uk
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