Pain in the arm after cerebral infarction is not easy to cure. This pain is a neuropathic pain that often appears in the affected arm after cerebral infarction. The pain can be complicated by severe contractures, which can affect the later recovery. Treatment may include conventional pain medications, NSAIDs, and tricyclic antidepressants. Physical therapy, such as massage, transcutaneous electrical nerve stimulation, ultrasound therapy, and acupuncture from Chinese medicine, can also be used. However, the above-mentioned methods can only relieve the pain, not the final solution. If the pain is really severe and the above-mentioned oral medications for pain relief and physical therapy are ineffective, ganglion block therapy or thoracic sympathectomy can be considered, but this treatment is invasive or surgical, and the damage caused by the treatment is also relatively large.