Why does my arm hurt when I try to lift it, and what should I do?

Generally, the inability to lift the arm due to pain upon movement may be caused by factors such as muscle fatigue, improper posture, shoulder periarthritis, cervical disc herniation, or cervical spondylosis. This condition can be improved by avoiding overuse of the arm, adjusting sitting posture, and medication. If discomfort persists, it is recommended to seek timely medical attention at a hospital for symptomatic treatment under a doctor's guidance. Detailed explanations are as follows:

1. Muscle Fatigue

Prolonged or excessive use of the arm involving repetitive movements can lead to muscle fatigue, resulting in pain and weakness. Avoid overusing the arm and apply appropriate warm compresses to help alleviate the pain.

2. Improper Posture

Maintaining poor posture for extended periods, such as looking down at a phone or computer, may cause tension in the neck and shoulder muscles, affecting arm movement. It is recommended to adjust sitting and standing postures, maintain proper alignment, and perform regular stretching exercises for the neck and shoulders.

3. Shoulder Periarthritis

Long-term overuse or poor posture may cause chronic shoulder injuries, leading to shoulder periarthritis. Inflammation around the shoulder joint can result in restricted arm movement and pain. If necessary, follow your doctor's advice to take medications such as acetaminophen tablets, nimesulide tablets, or ibuprofen sustained-release capsules to help relieve symptoms.

4. Cervical Disc Herniation

If the herniated disc compresses the nerve roots, it can cause pain in the shoulder and upper limb, with increased pain during arm elevation. It is recommended to use medications such as ibuprofen tablets, aspirin tablets, or Gentongping granules under a doctor's guidance to alleviate pain.

5. Cervical Spondylosis

Degenerative changes in the cervical spine can lead to cervical spondylosis, which may compress nerve roots, causing arm pain and weakness. Follow your doctor's recommendations for treatments such as cervical disc radiofrequency ablation, which precisely targets the affected area with radiofrequency energy to improve symptoms.

If symptoms continue to worsen, it is recommended to promptly visit a reputable hospital for treatment under the guidance of a specialist. During recovery, ensure adequate rest and relaxation, and avoid frequent use of the arm to prevent secondary injury.