Numbness in the hands and feet is caused by poor peripheral blood flow, and the phenomenon of numbness occurs due to insufficient local blood supply to the hands and feet. Numbness in the hands and feet is a symptom that often occurs in people’s daily life, such as pregnancy, incorrect sleeping position, squatting in the toilet for a long time can be triggered. Usually it will be eliminated in a short time and will not be a major problem. However, some people with tingling hands and feet for a long time (more than a day) can not be relieved, it may be a signal that the body has a disease. Causes of numbness in the hands and feet are related to the following conditions Compression When sleeping, sitting incorrectly, the limbs are in a state of prolonged compression, it is easy to feel numbness, or even no sensation. This is generally a normal situation, there will not be any major problems, activities will soon ease over, do not need to care too much. The human body has a degree of temperature sensing, more than the human body sensing degree of the cold state, the hands and feet sensory nerve failure, manifested as numbness in the hands and feet, no sensory symptoms. Freezing for too long can cause permanent tissue necrosis in the area. Drugs Some drugs or chemicals can also cause numbness in the hands and feet under certain circumstances, such as xanthin and dysentery, which can cause numbness in the hands and feet after taking these two drugs. If you stay too long in the environment containing hydrogen, arsenic, carbon disulfide, etc., it will also lead to numbness in the hands and feet. Therefore, you must be careful with the medicine and do not go to play or walk near chemical plants. Diabetes If there is no pressure on the hands and feet but there is frequent numbness, it is necessary to consider whether it is caused by diabetes. Diabetes can also cause soreness and swelling in the body, especially in older people. Neuritis Neuritis can cause damage to nerves in various parts of the body, making them unable to function properly and more unresponsive to various parts of the body, so it can lead to symptoms such as numbness in the hands and feet, muscle atrophy, and weakness in the limbs. Nerve stimulation Nerve stimulation usually results in localized numbness, not numbness in the hands and feet at the same time, such as numbness in the arms due to cervical spondylosis, numbness in the legs due to nerve stimulation in the lumbar spine and shoulder, etc., all of which are caused by localized stimulation leading to numbness in specific areas. Drug reactions Antihypertensive drugs, cardiac drugs, neuroleptic or paralytic drugs can cause localized numbness in the limbs, so please take them as prescribed by your doctor. Physical irritation Burns, heavy hammering, and tapping can cause numbness in the hands and feet, and should be treated symptomatically. Numbness in the hands and feet may not affect life and work at first, so it is easier to be ignored. If it is allowed to develop, it will lead to the aggravation of the disease, and the numbness will last longer and longer, and may eventually lead to paralysis, so it must be taken seriously.