Orthopedic and movement
Frozen Shoulder (Adhesive Capsulitis)
Expert-reviewed guidance on frozen shoulder — the three stages, why the stage matters more than the technique, and how long the course really runs.
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Frozen shoulder is a condition in which the capsule surrounding the shoulder joint becomes inflamed and thickened, progressively restricting movement. It follows a recognizable arc through three stages — a painful freezing phase, a stiff frozen phase, and a gradual thawing phase — and the whole course commonly takes one to three years. The defining feature is that movement is limited whether you move the arm yourself or someone else moves it for you, which distinguishes it from most other shoulder problems. Treatment differs by stage, and aggressive stretching during the painful phase typically makes things worse rather than better.
What frozen shoulder is
The shoulder joint sits inside a capsule of connective tissue. In frozen shoulder, that capsule becomes inflamed and thickened, and the space inside the joint contracts.
The distinguishing feature is loss of passive movement. With most shoulder problems, someone else can move your arm further than you can move it yourself. With frozen shoulder, they can't — the restriction is in the joint itself, not in the muscles moving it.
External rotation is usually the most restricted direction, which is why reaching behind your back or across your body becomes difficult early.
The three stages
- Freezing — roughly 6 weeks to 9 months. Pain dominates. It's often worse at night and can be severe. Movement progressively reduces. This is the stage where aggressive stretching does the most harm.
- Frozen — roughly 4 to 12 months. Pain typically eases while stiffness remains or worsens. Daily tasks become the main difficulty — dressing, reaching, fastening a seatbelt.
- Thawing — roughly 6 months to 2 years. Movement gradually returns. Recovery is slow, and some people retain a small permanent restriction, though most regain function.
What causes frozen shoulder (adhesive capsulitis)
- Frequently nothing identifiable. It can follow a period of immobility — after an injury, a fracture, or surgery — or begin with no apparent trigger at all.
- It's more common in people with diabetes, and in thyroid disease. The association with diabetes is strong enough to be worth mentioning to your doctor if you haven't been tested.
- More common between roughly 40 and 60, and more common in women.
- Having it in one shoulder increases the likelihood of it occurring in the other, usually later rather than at the same time.
What helps, by stage
The stage matters more than the technique.
- During the freezing phase — pain management, gentle movement within a comfortable range, and avoiding aggressive stretching. Pushing into pain at this stage typically prolongs the inflammatory phase.
- During the frozen phase — this is where stretching and mobility work earn their place, since pain has usually settled enough to tolerate it. Progressive, sustained, and frequent beats occasional and forceful.
- During the thawing phase — restoring strength alongside the returning range, and rebuilding confidence in using the arm normally.
- Throughout — physical therapy, matched to the stage. → Find a physical therapist
Corticosteroid injection may be considered, particularly during the painful phase, where it can reduce pain enough to make rehabilitation possible. Discuss with your doctor.
Surgery — manipulation under anesthesia or capsular release — is considered for a minority where symptoms persist beyond the expected course and function remains significantly limited. → Recovery after shoulder surgery
What a course of physical therapy involves
- Assessment confirms the diagnosis, establishes which stage you're in, and measures your current movement so progress is trackable.
- Sessions are matched to the stage, and most of the work happens at home — frequent, brief mobility work generally beats occasional long sessions.
- Expect the course to be long. Frozen shoulder isn't a six-week problem, and a therapist who tells you otherwise is overpromising.
- Tracking movement matters more here than in most conditions, because progress is slow enough to be invisible day to day. Measured range at intervals shows what daily experience doesn't.
Goals worth setting
Fasten a bra or reach a back pocket · Put on a coat without help · Reach the top shelf · Sleep on that side · Wash and dry my hair
Improve range of motion · Reduce pain
Frequently Asked Questions
Why is it worse at night?
Night pain is characteristic of the freezing phase and is one of the more difficult features. Positioning and pain management both help; discuss options with your doctor.
Will it get better on its own?
Most cases improve substantially over time. Treatment aims to reduce pain, maintain what movement you have, and speed the return — rather than to change the underlying course dramatically.
Is there a link with diabetes?
Yes — frozen shoulder is notably more common in people with diabetes. If you haven't been tested and you develop frozen shoulder, it's worth mentioning to your doctor.
Should I stretch through the pain?
Not during the painful freezing phase — aggressive stretching then typically prolongs it. Stretching earns its place in the frozen phase, once pain has settled enough to tolerate it.
How long does frozen shoulder last?
Commonly one to three years across all three stages. Some people recover faster, some considerably slower. It's genuinely slow, and knowing that at the start helps.
Can I get it in the other shoulder?
It's more likely than in someone who has never had it, usually later rather than simultaneously.
Can physical therapy help frozen shoulder?
Yes, matched to the stage you are in. A course confirms the diagnosis, establishes the stage, and measures your movement so progress is trackable — which matters more here than in most conditions, because progress is slow enough to be invisible day to day. Expect the course to be long; frozen shoulder is not a six-week problem.
What exercises should I avoid with frozen shoulder?
During the freezing phase, aggressive stretching. Pushing into pain at that stage typically prolongs the inflammatory phase. Gentle movement within a comfortable range is the aim early on; stretching and mobility work earn their place later, in the frozen phase, once pain has settled enough to tolerate it.
Related conditions
Conditions and pages that commonly come up alongside frozen shoulder.
Recovery after shoulder surgery
Considered for a minority where symptoms persist beyond the expected course.
Learn more →Tendinopathy
The other common cause of persistent shoulder pain, and a different problem entirely.
Learn more →Neck pain
Shoulder symptoms sometimes originate in the neck. What tells them apart.
Learn more →Persistent pain
The wider picture on long-term pain, and what treatment can realistically offer.
Learn more →Find a physical therapist · Find an occupational therapist · Adult orthopedic therapy · All adult therapy
Disclaimer. For general educational purposes; not medical advice, diagnosis, or treatment. Seek urgent medical attention for any of the symptoms listed above.