Frozen Shoulder

Frozen Shoulder (Adhesive Capsulitis): Symptoms, Stages, Treatment & Recovery

Frozen shoulder (also called adhesive capsulitis) is a painful shoulder condition that causes progressive stiffness, reduced range of motion, and difficulty with everyday tasks like dressing, reaching overhead, or sleeping comfortably. It often develops gradually and can last many months if not managed properly.

This guide explains what frozen shoulder is, who gets it, the stages of recovery, the latest evidence-based treatment options, and how physiotherapy can help you recover safely.

What is frozen shoulder?

Frozen shoulder occurs when the capsule surrounding the shoulder joint becomes inflamed, thickened, and stiff. Over time, tight bands of tissue can form, making shoulder movement painful and restricted.

A key feature is that frozen shoulder affects both:

• Active movement (when you move your arm yourself)
• Passive movement (when someone else moves your arm for you)

This helps physiotherapists distinguish frozen shoulder from conditions like rotator cuff tendinopathy, where passive movement is often less limited.

Who is most at risk?

Frozen shoulder is more common in:

• Adults aged 40–60
• Women (slightly more than men)
• People with diabetes (higher risk and often longer recovery)
• Thyroid disorders
• People after shoulder injury, surgery, or prolonged immobilisation

It can occur without a clear trigger (primary frozen shoulder) or develop after injury/surgery (secondary frozen shoulder).

Common symptoms of frozen shoulder

Symptoms usually build up over weeks to months and may include:

• Persistent shoulder pain (often worse at night)
• Progressive stiffness and reduced movement in multiple directions
• Difficulty reaching overhead (e.g. cupboard, hair washing)
• Trouble reaching behind the back (e.g. putting on a bra, tucking in a shirt)
• Reduced function at work, sport, and daily activities

The three stages of frozen shoulder

Frozen shoulder commonly follows a predictable pattern, although timelines vary between individuals.

1) Freezing stage (painful stage)

Typical duration: 2–9 months

• Pain gradually increases
• Movement becomes progressively restricted
• Night pain and sleep disturbance are common

In this stage, aggressive stretching can sometimes flare symptoms. Treatment is usually focused on pain control and gentle movement.

2) Frozen stage (stiff stage)

Typical duration: 4–12 months

• Pain may settle slightly
• Stiffness becomes the dominant issue
• Daily activities remain difficult due to limited range

3) Thawing stage (recovery stage)

Typical duration: 6–24 months

• Movement gradually improves
• Pain continues to reduce
• Function slowly returns with appropriate rehab

Latest evidence: does frozen shoulder resolve on its own?

Frozen shoulder is often described as “self-limiting,” but more recent research suggests that some people can be left with persistent stiffness or pain if it’s not managed well. Early assessment, education, and a stage-appropriate physiotherapy plan can help reduce flare-ups and improve outcomes.

How is frozen shoulder diagnosed?

Frozen shoulder is mainly diagnosed clinically based on:

• Gradual onset of pain and stiffness
• Global restriction of shoulder movement
• Loss of both active and passive range of motion

Imaging (X-ray, ultrasound, MRI) may be used to rule out other causes of shoulder pain, but diagnosis is usually based on movement testing and history.

How physiotherapy helps frozen shoulder recovery

Physiotherapy is one of the most effective non-surgical approaches for frozen shoulder, especially when it’s tailored to the stage you’re in.

Physiotherapy in the freezing stage

• Pain management strategies
• Gentle mobility work to maintain movement
• Education on what to avoid (to reduce flare-ups)
• Activity modifications to keep you functioning

Physiotherapy in the frozen stage

• Gradual joint and soft tissue mobility work
• Progressive stretching within tolerance
• Strengthening shoulder, scapular, and upper back muscles
• Improving function without over-irritating the joint

Physiotherapy in the thawing stage

• Rebuilding strength and endurance
• Restoring full shoulder control and range
• Progressing toward work, sport, and gym activities
• Reducing compensation patterns that can cause neck or upper back pain

Other evidence-based treatment options

Depending on your symptoms and stage, other options may be considered alongside physiotherapy:

• Corticosteroid injections (often most helpful early for pain reduction)
• Hydrodilatation (image-guided capsular distension) in selected cases
• Medication advice from your GP to support sleep and pain control

Surgery is rarely required and is usually considered only when conservative care has not helped over an extended period.

How long does recovery take?

Recovery time varies, but many people improve within 6–12 months with appropriate treatment. Some cases can take longer (especially with diabetes). A tailored physiotherapy plan aims to reduce pain sooner, restore function earlier, and minimise long-term stiffness.

When should you see a physiotherapist?

Book an assessment if:

• Shoulder pain and stiffness lasts more than a few weeks
• Night pain is disturbing your sleep
• Your range of motion is progressively worsening
• Daily activities (dressing, reaching, lifting) are becoming difficult