Shoulder pain can become particularly frustrating when it interferes with sleep or makes everyday movements such as reaching overhead, dressing or lifting an object difficult.

Pain at night or discomfort when raising the arm can occur with several different shoulder conditions. Rotator cuff-related problems and frozen shoulder are two possibilities, but similar symptoms can occur with other conditions as well. Symptoms alone cannot establish the cause, so persistent or significant shoulder pain may require a clinical assessment.

Why Does My Shoulder Hurt at Night?

Night-time shoulder pain is commonly reported in people with rotator cuff-related shoulder problems. Research has found an association between night pain and rotator cuff-related conditions, although night pain is not specific to one diagnosis. 

The position of the shoulder during sleep may also make symptoms more noticeable, particularly when lying on the affected side.

Persistent night pain can also occur with frozen shoulder. One of its characteristic symptoms is shoulder pain that may become worse at night, together with increasing stiffness and difficulty moving the arm. 

Why Does It Hurt When I Raise My Arm?

Pain when lifting the arm can occur when structures around the shoulder, including the rotator cuff tendons, become irritated or injured.

Rotator cuff problems may cause pain with lifting or reaching, and some patients also experience weakness. Rotator cuff tears can develop following an injury or gradually over time through changes in the tendon. Repetitive overhead activity can also contribute to tendon problems.

However, painful movement does not automatically mean you have a rotator cuff tear. Different shoulder problems can produce overlapping symptoms.

Common Causes of Shoulder Pain

Rotator Cuff-Related Shoulder Pain

The rotator cuff is a group of muscles and tendons that helps control shoulder movement.

Rotator cuff-related pain can develop gradually and may become noticeable during overhead activities, reaching or lifting. Nighttime pain is also commonly reported. Current clinical guidance supports careful assessment followed by appropriate rehabilitation and exercise-based management for many cases of rotator cuff tendinopathy. 

Rotator Cuff Tear

A rotator cuff tear can happen after a fall or sudden injury, or develop gradually through tendon wear. Pain, weakness and difficulty lifting the arm may occur, although symptoms vary considerably between people. 

A clinical examination is generally used to assess shoulder movement and strength. Depending on the findings, imaging such as X-ray, ultrasound or MRI may be considered to investigate the bones, tendons and other structures. 

Frozen Shoulder

Frozen shoulder, also known as adhesive capsulitis, causes pain and progressive stiffness.

Night pain can be prominent, especially during the earlier painful phase. As stiffness develops, movements such as reaching overhead or behind your back can become increasingly difficult.

A 2026 review describes frozen shoulder as a condition characterised by pain and restricted shoulder movement, with management depending on the stage and severity of the condition. 

Shoulder Arthritis

Osteoarthritis of the shoulder joint can cause pain, stiffness and reduced movement. Some people may also notice clicking or other changes in shoulder function. Assessment can include examination and imaging such as X-rays, with additional imaging considered when required. 

When Should You Get Your Shoulder Assessed?

Consider a medical assessment if shoulder pain:

  • Continues or keeps returning

  • Disturbs your sleep

  • Makes it difficult to raise or use your arm

  • Is associated with weakness or significant stiffness

  • Started after an injury

  • Is affecting work, exercise or everyday activities

Seek urgent medical attention after a significant injury if the shoulder appears deformed, you cannot move the arm, or there is severe pain or swelling.

Shoulder pain accompanied by chest pain, difficulty breathing, sweating or other symptoms suggesting a medical emergency should not be assumed to be an orthopaedic problem and requires urgent medical attention.

Does Shoulder Pain Always Need Surgery?

No.

Treatment depends on the underlying diagnosis, severity of symptoms, functional limitations and individual circumstances. Many shoulder conditions can initially be managed with non-surgical approaches such as appropriate activity modification and rehabilitation. Surgical treatment may be considered for selected conditions when clinically appropriate.

The important first step is identifying what is causing the pain, rather than assuming that every painful shoulder needs an operation.

What Happens During a Shoulder Assessment?

A clinician will generally ask about when the symptoms began, what movements aggravate them and whether there was an injury.

The shoulder can then be examined for:

Range of movement
How far you can move the shoulder actively and passively.

Strength
Whether particular movements reveal weakness or pain.

Tenderness and movement patterns
Where the pain occurs and how the shoulder behaves during different movements.

Imaging may be recommended depending on the findings. X-rays can assess bones and joint changes, while ultrasound and MRI can provide more information about tendons and other soft tissues. 

The Bottom Line

Shoulder pain at night or pain when raising your arm can have several causes, including rotator cuff-related problems, rotator cuff tears, frozen shoulder and arthritis.

These conditions can produce similar symptoms but may require different approaches to assessment and treatment. Persistent pain, increasing stiffness, weakness or difficulty using your arm should therefore be assessed rather than diagnosed from symptoms alone.

 

Medical Disclaimer

This article is provided for general educational purposes and does not replace an individual medical assessment, diagnosis or treatment plan. Shoulder symptoms can have different causes and may require different forms of evaluation and treatment. If you have persistent, severe or worsening symptoms, seek advice from an appropriately licensed healthcare professional.