The difference between frozen shoulder and cervical spondylosis is mainly reflected in the differences in pain location, pain nature, and activity limitation, as follows: a. Pain location and pain nature: The pain caused by frozen shoulder is usually limited to the periarthritic joints, and is often significantly aggravated by overexertion or cold, and may even lead to limitation of shoulder joint activity, stiffness, and local muscle atrophy. Cervical spondylosis often causes significant swelling and pain in the upper extremities, and radiating pain, and in some cases, numbness in the limbs. Restriction of movement: Frozen shoulder will be accompanied by restriction of shoulder joint movement, and the patient will feel severe pain in the shoulder joint when combing hair, and even be unable to complete the combing action, while cervical spondylosis will not be accompanied by restriction of shoulder joint movement.