What causes pain in the left arm?

Jul 24, 2022 Source: Cainiu Health
Disease description:

This morning, my aunt experienced pain in her left arm. Could you please explain what might be causing this?

Doctor's answer (1)
Dr. Lin Yunfei
Left shoulder pain may be caused by periarthritis of the shoulder (frozen shoulder) or by a rotator cuff injury. If the pain is due to periarthritis of the shoulder, it can be improved through localized exercises and may be supplemented with traditional Chinese medicine therapies such as acupuncture and massage. If the pain results from a rotator cuff injury, treatment may include medications such as celecoxib capsules, as prescribed by a physician, or arthroscopic surgery.