Frozen shoulder can be a frustrating condition. The shoulder gradually becomes painful and stiff, making everyday activities such as getting dressed, reaching overhead or sleeping comfortably difficult.
One of the most important things to understand is that frozen shoulder usually has a long and variable recovery. Symptoms are often measured in months rather than weeks and may persist for one to three years or longer. Most people improve substantially, but some continue to experience pain or stiffness in the longer term.
Setting realistic expectations from the beginning is therefore an important part of managing frozen shoulder.
What is frozen shoulder?
Frozen shoulder, also known as adhesive capsulitis, is characterised by shoulder pain and a progressive loss of movement.
A key feature is that both active and passive movement become restricted. In other words, you cannot move the shoulder through its normal range yourself, and it also remains restricted when someone else tries to move it. Loss of external rotation – turning the arm outwards – is particularly characteristic.
The condition involves changes in the tissues surrounding the shoulder joint, including thickening and stiffening of the joint capsule. Exactly why this develops is not completely understood.
What are the symptoms of frozen shoulder?
Frozen shoulder often develops gradually without an obvious injury. Common symptoms include:
- gradually increasing shoulder pain
- pain at night or disturbed sleep
- progressive loss of shoulder movement
- difficulty reaching overhead or behind your back
- difficulty with everyday activities such as dressing.
Early frozen shoulder can sometimes look similar to other shoulder conditions, which is why the progressive loss of passive movement – particularly external rotation – is an important clinical clue.
Why does frozen shoulder happen?
For many people, there is no obvious cause. This is known as primary frozen shoulder.
Diabetes, thyroid disease and dyslipidaemia are associated with an increased risk. Shoulder stiffness can also develop following injury, surgery or a period of reduced shoulder movement.
However, many people develop frozen shoulder without a clear explanation.
How is frozen shoulder diagnosed?
Frozen shoulder is primarily a clinical diagnosis based on your symptoms and physical examination.
A physiotherapist or doctor will assess how your symptoms developed and examine your shoulder movement and function. There is no single test that definitively confirms frozen shoulder, so it is also important to consider other possible causes of a painful, stiff shoulder.
Do I need an X-ray, ultrasound or MRI?
Not necessarily.
Imaging is generally not required to diagnose a typical frozen shoulder. An X-ray may be used to exclude other causes of pain and stiffness, while ultrasound or MRI may be considered if another condition is suspected.
Imaging is therefore usually an adjunct to the clinical assessment rather than a standalone test for frozen shoulder.
How long does frozen shoulder last?
Frozen shoulder is traditionally described as progressing through ‘freezing’, ‘frozen’ and ‘thawing’ phases. However, this can give the impression that everyone follows a predictable sequence and eventually makes a complete recovery.
The reality is more variable.
Frozen shoulder is often described as lasting one to three years, and some people continue to experience symptoms beyond this. A systematic review found no good evidence that untreated frozen shoulder reliably progresses through these traditional phases to complete resolution.
This means progress should not be judged over days or even a few weeks. Improvement can be slow and uneven.
Realistic expectations matter. Treatment should focus on managing symptoms, maintaining function and supporting gradual improvement rather than promising a quick ‘fix’.
How is frozen shoulder treated?
There is no single treatment that is best for everyone.
Management should consider how painful and irritable the shoulder is, whether pain or stiffness is the main limitation, how much symptoms affect sleep and daily life, and your individual goals.
Physiotherapy and exercise
Movement and exercise can form part of frozen shoulder management, but there is no single ‘best’ exercise program.
Importantly, more aggressive treatment is not necessarily better. When pain and irritability are high, repeatedly forcing the shoulder into painful end ranges can aggravate symptoms. As irritability settles and stiffness becomes more prominent, greater movement and loading may be tolerated.
Physiotherapy can help with diagnosis, education, maintaining activity and function, appropriately dosing exercise and adjusting management as symptoms change.
The evidence does not suggest that simply providing more physiotherapy or more intensive treatment automatically produces a better outcome. The 2025 BESS guideline was neutral on whether physiotherapy alone improves recovery faster than the natural history of frozen shoulder, highlighting the importance of individualised care and self-management.
Corticosteroid injections
An intra-articular corticosteroid injection is one of the better-supported options for short-term improvement in pain and function, particularly when pain and irritability are significant.
Reducing pain may also make sleep, movement and rehabilitation easier. However, an injection is not a cure, and its main benefits appear to be in the shorter term.
Hydrodilatation
Hydrodilatation involves injecting fluid into the shoulder joint, usually with corticosteroid and local anaesthetic, to distend the joint capsule.
It may provide additional short- to medium-term improvements in pain, function and movement for some people, although the longer-term benefit remains less certain.
Surgery
Most people are initially managed without surgery.
For persistent and significantly disabling symptoms, procedures such as manipulation under anaesthesia or arthroscopic capsular release may occasionally be considered.
The large UK FROST trial compared structured physiotherapy with corticosteroid injection, manipulation under anaesthesia and arthroscopic capsular release. All groups improved substantially, with no clearly superior treatment in patient-reported pain and function at 12 months.
Escalating treatment should therefore be a shared decision based on symptoms, progress, preferences and the potential benefits and risks.
What can you do while your shoulder recovers?
Because recovery can take time, an important goal is to keep doing as much as you reasonably can rather than waiting for the shoulder to feel completely normal.
This may involve modifying particularly painful activities, continuing to exercise the rest of your body and gradually increasing what you do with the shoulder as symptoms allow.
Progress may not be linear. A flare-up does not necessarily mean you have damaged the shoulder, and a period of little change does not necessarily mean recovery has stopped. The approach may also need to change over time as pain and stiffness change.
When should you have your shoulder assessed?
Frozen shoulder is only one cause of a painful or stiff shoulder.
Consider having your shoulder assessed if pain or stiffness is persisting, movement is progressively decreasing, sleep or everyday activities are significantly affected, symptoms followed significant trauma, or your symptoms are not progressing as expected.
A physiotherapist or doctor can assess whether frozen shoulder is the likely explanation and whether further investigation or treatment may be appropriate.
Frequently asked questions
How long does frozen shoulder take to recover?
Recovery is usually measured in months rather than weeks. Frozen shoulder is often described as lasting one to three years, although recovery varies considerably and some people have symptoms for longer.
Does frozen shoulder go away on its own?
Frozen shoulder often improves substantially over time, but complete spontaneous recovery should not be assumed. Some people continue to experience pain, stiffness or reduced movement in the longer term.
Should you exercise a frozen shoulder?
Usually, some movement and exercise are appropriate, but more aggressive stretching is not necessarily better. How much the shoulder tolerates depends on factors such as pain and irritability, so exercise should be adjusted accordingly.
Can physiotherapy help frozen shoulder?
Physiotherapy can help with diagnosis, education, appropriate exercise, maintaining function and setting realistic expectations. There is no single physiotherapy technique that has been shown to quickly ‘unfreeze’ the shoulder.
Does frozen shoulder need a corticosteroid injection?
Not necessarily. Corticosteroid injections can provide short-term improvements in pain and function, particularly when pain is a major limitation, but they are not required for everyone.
Do you need a scan for frozen shoulder?
Usually not. Frozen shoulder is primarily diagnosed from your symptoms and physical examination. Imaging may be useful when another condition needs to be excluded or the presentation is atypical.
Does frozen shoulder require surgery?
Most people are initially managed without surgery. More invasive treatment may be considered when symptoms remain significantly disabling despite appropriate non-operative management.
The bottom line
Frozen shoulder is a painful and often frustrating condition, but the most important message is that recovery takes time.
There is no single exercise, hands-on treatment or procedure that instantly ‘unfreezes’ the shoulder. Management should focus on realistic expectations, managing symptoms, maintaining function and progressively restoring useful movement over time.
This content provides general information only and is not a substitute for individual health advice. Speak with a qualified health professional about what is appropriate for you.
