Although the exact cause is unknown, certain factors may increase your risk of developing frozen shoulder.

Age and sex

People 40 and older are more likely to experience frozen shoulder. Most of the people who develop the condition are women.

Immobility or reduced mobility

People who have experienced prolonged immobility or reduced mobility of their 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 medical problems appear to be predisposed to develop frozen shoulder. Examples include:

  • Diabetes
  • Overactive thyroid (hyperthyroidism)
  • Underactive thyroid (hypothyroidism)
  • Cardiovascular disease
  • Tuberculosis
  • Parkinson's disease
Apr. 28, 2011