What causes muscle pain in the left upper arm?

Generally speaking, left upper arm muscle pain may be caused by factors such as poor lifestyle habits, shoulder periarthritis, or cervical spondylosis. A detailed analysis is as follows:

1. Poor Lifestyle Habits

Long-term physical labor or intense exercise can increase pressure on the upper arm, leading to muscle damage and resulting in pain in the left upper arm. In such cases, patients are advised to rest more and avoid overexertion or vigorous activities. Appropriate massage, acupuncture, and warm compresses on the affected area may also help.

2. Shoulder Periarthritis

Shoulder periarthritis may result from chronic overuse or improper treatment after injury, causing muscle pain in the left upper arm and often accompanied by limited mobility. Patients are advised to follow medical guidance and take medications such as enteric-coated aspirin tablets or ibuprofen granules for treatment.

3. Cervical Spondylosis

Cervical spondylosis may be caused by degenerative changes in the cervical spine or chronic strain. When nerves on the left side of the neck are compressed, patients may experience pain in the left upper arm, along with symptoms such as numbness in the fingers and weakness in the lower limbs. Under a doctor's supervision, patients may take medications like Jingfukang granules or Jingu Lian tablets to relieve pain.

In addition, left upper arm muscle pain could also be due to other causes such as muscle strain or arthritis. Patients should seek timely medical evaluation at a hospital.