There are several causes of numbness in the feet: lumbar disc herniation, poor blood circulation in the feet, and peripheral nerve lesions in the feet.
A herniated lumbar disc that compresses a nerve root can cause numbness in the foot if the peripheral nerves of the compressed nerve root are distributed in the foot. This is a relatively common cause of numbness in the feet, which mainly manifests as numbness in the bottom of the foot.
Numbness in the foot caused by a herniated disc can be treated with nerve-nourishing medications such as methylcobalamin, vitamin B, and rat nerve growth factor for injection, as well as with mannitol drip and dehydration and decongestion therapy.
Muscle spasm caused by pressure on the foot and strenuous exercise can cause numbness in the foot due to poor blood circulation. Local pressure should be avoided for a long time, and local hot compresses or scalding of the feet after strenuous exercise can effectively improve blood circulation to the feet and reduce the symptoms of local numbness. If atherosclerosis is the cause of poor blood supply to the feet, in addition to local fumigation and scalding, you can take drugs that dilate small blood vessels, such as hydrazinebendazole.
Diabetics with poorly controlled blood glucose are prone to peripheral neuritis of the feet, causing numbness in the feet. In this case, in addition to aggressive use of medications to control blood glucose, nerve-nourishing drugs need to be applied for treatment.