Loss of sensation around the inner ankle is usually associated with lumbar disc herniation, cerebral infarction, spondylitis, etc. Conservative or surgical treatments can be taken to control the condition in conjunction with the cause of the disease. 1. Herniated lumbar intervertebral disc: the disease itself is not serious, but if it is not treated in time, the lumbar vertebrae compress the surrounding nerve tissues, which may lead to loss of sensation around the inner ankle. If the disease presses on the nerves and causes pain, oral non-steroidal anti-inflammatory drugs can be taken for pain relief, such as ibuprofen and meloxicam. If the condition is more serious, surgical treatment, such as spinal endoscopic nucleus pulposus removal, can reduce nerve palsy. 2. Cerebral infarction: If the scope of cerebral infarction is large, resulting in local ischemia, hypoxia, untimely treatment will cause limb numbness and insensibility. Thrombolytic therapy, such as oral warfarin sodium tablets, aspirin, etc., is needed. If carotid artery stenosis occurs, and the stenosis is more than 50%, it is recommended to do carotid endarterectomy as soon as possible. 3. Spondylitis: spondylitis leads to neurological dysfunction, as the main sensory neurons in the posterior part of the spinal cord are damaged, and there is no sensation in the feet; vitamin B drugs can be used, which can help the recovery of neurological function. Vitamin B1 is commonly given intramuscularly and intravenously. The lack of sensation around the inner ankle of the foot may also be caused by other reasons, it is recommended to seek medical attention and analyze the cause of the disease through the guidance of a professional physician, and then take formal measures to control the progress of the disease, in order to prevent delays in the condition.