Frozen Shoulder: Symptoms, Stages, Exercises and Treatment

What frozen shoulder is

Frozen shoulder, known clinically as adhesive capsulitis, is a thickening and tightening of the capsule that wraps the shoulder joint. That capsule is normally loose enough to allow an enormous range of movement. In frozen shoulder it becomes inflamed and then progressively contracted, physically restricting the joint in every direction rather than only the movement that hurts.

Features that make it recognisable, echoed in the NHS frozen shoulder guidance:

• Usually one shoulder at a time, most often between the ages of 40 and 60, and roughly twice as common in women.
• People with diabetes are at meaningfully higher risk and tend to have a longer, stiffer course. Thyroid disorders, Parkinson's disease and cardiovascular disease are also associated.
• It can follow an injury, surgery or a period of immobility, and very often there is no trigger at all.
• A minority develop it in the other shoulder within a few years. It is rare for the same shoulder to freeze twice.

The symptoms

• Pain in every direction, often felt over the outer upper arm rather than the joint itself.
• Stiffness that limits specific tasks: reaching behind your back to fasten a bra or get a wallet, putting on a coat, washing your hair, reaching a seatbelt.
• Night pain, particularly lying on the affected side. This is often the symptom that finally drives people to seek help.
• A hard stop rather than a painful arc. The arm reaches a point and simply will not go further, whoever is moving it.
• Pain at the end of movement rather than through the middle of it.
• Gradual onset, usually over weeks, with no single injury to point at.

The three stages

Typical durations, drawn from orthopaedic guidance from the American Academy of Orthopaedic Surgeons:

Added together, frozen shoulder can run for one to three years from first twinge to full recovery if nothing is done, a timeline the NHS echoes when it describes the condition as taking months and sometimes years to settle on its own.

The self-check: frozen shoulder or rotator cuff?

The most useful check you can do yourself is passive external rotation: how far your arm rotates outwards when someone else moves it for you, elbow tucked into your side, as though you were pushing a door open with your forearm.

• Rotator cuff tear or impingement: lifting the arm yourself is weak or painful, and once someone else takes the weight and moves it gently, the arm still travels through close to a full passive range.
• Frozen shoulder: passive external rotation is blocked by a firm, capsular end-feel. It simply will not go further, regardless of who is moving it or how gently. This near-complete loss of passive external rotation is described in the orthopaedic literature as close to a pathognomonic sign of frozen shoulder, precisely because cuff problems rarely block passive rotation the same way.

If you are unsure which camp you are in, the guide to rotator cuff tear symptoms covers the weakness-versus-pain distinction in more detail. Diagnosis is usually clinical, and scans are used mainly to exclude other problems rather than to confirm this one, since an X-ray of a frozen shoulder typically looks normal.

Exercises by stage

Do these gently, once or twice daily, in a warm shower or after a hot pack if that helps. Mild discomfort during and immediately afterwards is expected; pain that lingers for hours means you pushed too hard.

Freezing stage: keep it moving without provoking it

• Pendulum swings. Lean forward with your good hand supported on a table, let the affected arm hang, and use your body to swing it gently in small circles and back and forth. Ten in each direction. The arm stays relaxed and does no work.
• Table or wall slides. Rest your forearm on a table, then walk your body backwards so the arm slides forwards. Stop at the first stretch rather than pushing into it.
• Supported external rotation. Elbow at your side bent to 90 degrees, hold a stick with both hands and use the good arm to push the affected forearm outwards to the point of gentle stretch. Five slow repetitions.

Frozen stage: the mechanical work that earns its place

• All of the above, held longer. 20 to 30 second holds at the end of range, three to five repetitions, rather than a brief touch and release.
• Wall walks. Facing a wall, walk your fingers up as high as you can tolerate, hold, then walk down slowly. Repeat sideways with your shoulder to the wall.
• Towel stretch behind the back. Hold a towel over your shoulder with the good hand and the other end behind your back with the affected hand, then use the good arm to gently draw the affected hand upwards.
• Cross-body stretch. Draw the affected arm across your chest with the other hand and hold for 30 seconds.

Thawing stage: rebuild what got weak

• Band external and internal rotation, elbow at the side, three sets of ten to fifteen each way.
• Rows and scapular retraction for the mid-back control lost through months of guarding.
• Progressive overhead work, starting supported and moving towards free reaching, then light weight.

The strengthening logic is the same as in the rotator cuff exercise programme, applied to a shoulder that is finally willing to cooperate.

Treatment by stage, and what to avoid

Freezing: calm it down rather than chasing range

This is the stage people most often get wrong, usually by being handed an aggressive stretching programme too early. The capsule is actively inflamed, and hard stretching into a hot, angry joint tends to flare it rather than free it. The focus is pain management and gentle movement well within tolerance: activity modification, pacing, and where pain is significant, a conversation with your GP about anti-inflammatories or a corticosteroid injection, which can meaningfully reduce pain during this window.

Frozen: structured stretching and mobilisation

Once pain has settled to a background ache, the capsule is tight but no longer furious, and progressive stretching and joint mobilisation earn their keep. A home programme reviewed and progressed every couple of weeks is the backbone of this stage.

Thawing: strength and function

Range returns on its own biological timetable, and the job shifts to rebuilding rotator cuff and scapular control, plus retraining the overhead tasks you have been avoiding.

Sleeping, and what makes it worse

Night pain responds reasonably well to positioning: lie on the unaffected side with the painful arm supported on a pillow in front of you, or lie on your back with a folded towel under the upper arm so the shoulder is not pulled backwards. Avoid sleeping directly on the affected side, avoid carrying heavy shopping in that hand, and avoid any stretching that leaves you sore for hours afterwards.

Injections, hydrodilatation and surgery

Physiotherapy manages pain, function and how fast movement returns, and it does not override the capsule's own biology, particularly in the early painful weeks. Medical options sit alongside rehabilitation rather than replacing it:

• Corticosteroid injection: most useful in the freezing or early frozen stage when pain dominates. Good evidence for short to medium-term pain relief, and it makes the movement work tolerable rather than replacing it.
• Hydrodilatation, also called capsular distension: a larger volume of fluid injected into the joint to stretch the capsule, generally reserved for stiffness that is not shifting despite a genuine physiotherapy effort.
• Manipulation under anaesthesia or arthroscopic capsular release: considered when several months of conservative treatment have not restored useful function. This is a decision made with an orthopaedic surgeon.

Three things I correct most often

• "I should push through the stretching pain to get moving faster." In the freezing stage this backfires, since an inflamed capsule responds to aggressive stretch with more pain and more guarding.
• "This is basically a rotator cuff tear." A cuff tear is tendon damage while frozen shoulder is a capsule problem, and the passive rotation check usually separates them in seconds.
• "There is nothing to do but wait it out." The stage lengths are largely biological, and structured input still changes pain levels, preserves strength and shortens how disabled you feel along the way, which matters a great deal over a year or more.

FAQ: frozen shoulder

How long does frozen shoulder take to go away?

One to three years across the three stages if left entirely untreated. Structured treatment usually shortens the painful period and improves function well before the capsule has fully resolved.

What is the fastest way to check if it is frozen shoulder?

Tuck your elbow into your side and rotate the forearm outwards, first yourself and then with someone gently taking it further. If passive rotation stops hard and early regardless of who is moving it, that capsular block is frozen shoulder's calling card.

What should you not do with a frozen shoulder?

Avoid aggressive stretching during the painful stage, avoid sleeping on the affected side, avoid heavy lifting or carrying with that arm, and avoid immobilising it completely, since total rest adds stiffness without reducing the timeline.

Do frozen shoulder exercises actually help?

Yes, when matched to the stage. Gentle movement during the freezing stage preserves what you have, sustained stretching during the frozen stage is where range is regained, and strengthening during thawing restores function.

Does frozen shoulder need surgery?

Most people recover with physiotherapy and, where needed, an injection. Surgery or manipulation under anaesthesia is reserved for shoulders that remain significantly restricted despite several months of genuine conservative treatment.

Can frozen shoulder come back?

Recurrence in the same shoulder is uncommon once resolved. A minority develop it in the other shoulder within a few years, particularly where diabetes is part of the picture.

Is heat or ice better?

Heat before exercise helps most people move more comfortably, and ice afterwards can settle a shoulder that has been provoked. Use whichever gives you relief, since neither changes the underlying course.