If a patient has difficulty with the arm, the main causes are muscle, fascia and ligament strain and cold in the arm, as well as neurogenic cervical spondylosis, degeneration or osteoarthritis in the arm, and frozen shoulder, etc., as follows: 1. Arm muscle, fascia and ligament strain and cold: Mostly seen in people who are engaged in heavy physical labor, which may cause symptoms of difficulty with the arm. 2. 3. degeneration or osteoarthritis in the arm: mostly occurs in middle-aged and elderly people, which may also lead to arm pain. 4. frozen shoulder: frozen shoulder may also cause arm pain. Therefore, when a patient has arm trouble, he or she must consult a doctor to see what causes it, and give treatment for the cause to promote symptom reduction and recovery. When the symptoms are obvious, you must pay attention to the warmth of the arm area, avoid getting cold, and avoid excessive force activities on the arm area, so as not to aggravate the symptoms and affect the patient’s life.