Risk factors

Certain factors may increase your risk of developing frozen shoulder.

Age and sex

People 40 and older, particularly women, are more likely to have frozen shoulder.

Immobility or reduced mobility

People who've had prolonged immobility or reduced mobility of the shoulder are at higher risk of developing frozen shoulder. Immobility may be the result of many factors, including:

• Rotator cuff injury
• Broken arm
• Stroke
• Recovery from surgery

Systemic diseases

People who have certain diseases appear more likely to develop frozen shoulder. Diseases that might increase risk include:

• Diabetes
• Overactive thyroid (hyperthyroidism)
• Underactive thyroid (hypothyroidism)
• Cardiovascular disease
• Tuberculosis
• Parkinson's disease