Is the soreness and pain in the right shoulder due to shoulder periarthritis or cervical spondylosis?

Right shoulder pain may be caused by either periarthritis of the shoulder or cervical spondylosis. The specific symptoms and differences are as follows: 1. **Periarthritis of the Shoulder**: This condition mainly presents with shoulder pain and restricted movement, with pain being particularly noticeable at night. Patients may feel shoulder stiffness and experience pain when attempting to raise the arm or rotate the shoulder. Periarthritis commonly affects individuals aged 40 to 70 years, with a relatively higher incidence rate among women. 2. **Cervical Spondylosis**: Cervical spondylosis may cause numbness, soreness, and pain in the neck, shoulder, back, and arms. Symptoms may also include headache, dizziness, and autonomic nerve dysfunction. When cervical spondylosis compresses nerves, it can cause referred shoulder pain, manifesting as soreness in the right shoulder. To accurately determine the cause, it is recommended to consult a physician and undergo appropriate examinations.