Numbness and pain in the right hand is a sensory disorder, which may be caused by lesions in the left thalamus, such as left thalamic hemorrhage, cerebral infarction, and brain tumor, etc. Cerebral hemorrhage usually develops during activity, and cerebral infarction mostly starts in a quiet state. Patients with brain tumors usually have a chronic onset, while patients may experience headache, nausea, vomiting, and if necessary, cranial MRI plus angiography to clarify the disease and the cause of the disease. If the numbness and pain in the right hand are severe, the patient can be treated with nerve-nourishing drugs. If the patient has cervical spondylosis, the nerve may be compressed and the above symptoms may occur, and at the same time there may be discomfort and pain in the neck muscles.