Symptoms

Frozen shoulder typically develops slowly, and in three stages. Each stage can last a number of months.

• Freezing stage. Any movement of your shoulder causes pain, and your shoulder's range of motion starts to become limited.
• Frozen stage. Pain may begin to diminish during this stage. However, your shoulder becomes stiffer, and using it becomes more difficult.
• Thawing stage. The range of motion in your shoulder begins to improve.

For some people, the pain worsens at night, sometimes disrupting sleep.