The statement “Tingling on the back of the feet is a warning against four diseases” is unscientific and not true. Numbness of the back of the feet may be associated with improper lifestyle, hereditary neuropathy, nerve irritation neuropathy, diabetes, etc., more than four. 1. Improper lifestyle: for example, long-term sitting posture is incorrect, unilateral muscle overuse, etc., leading to muscle overuse, etc., can induce peroneal lateral dermatomyelitis, resulting in numbness of the back of the foot. 2. Hereditary neuropathy: People suffering from this disease have peripheral nerves that are abnormally sensitive to pressure, which can lead to recurrent numbness, tingling and loss of muscle function in the arms, hands, legs or feet. 3. Nerve irritation neuropathy: when the peroneal nerve is irritated, the local innervated area shows numbness symptoms, and there can be numbness on the back of the feet. 4. Diabetes mellitus: when patients with poor long-term glycemic control, peripheral neuropathy with varying degrees of lower limb vasculopathy, numbness of the foot sensation, foot ulcers occur in severe cases. There are many reasons for the numbness of the dorsum of the foot, it is recommended that when the patient has numbness of the dorsum of the foot to exclude physiological reasons for timely consultation, to identify the causes, under the guidance of the doctor standardized treatment.