Numbness of the limbs for many reasons, may be caused by physical diseases, such as physical deficiency or neuroinflammatory diseases. 1, by the compression: limbs if a long time by the body or other objects of compression, such as sleeping posture, sitting posture is incorrect, which can easily lead to obstruction of blood flow, causing numbness of the limbs. But this situation does not need to pay too much attention to the appropriate activities of the body can be alleviated. 2, the body Qi deficiency: anemia caused by the body Qi deficiency, it is easy to cause the blood metabolism slowed down, the hands and feet and other parts of the blood flow is not smooth, are the cause of numbness in the limbs. The lack of calcium in the body will make the body have back pain, limbs from time to time, such as pumping menstruation, which will also lead to numbness in the limbs. 3, peripheral neuritis: if the cold, fever or diarrhea after, may cause peripheral neuritis, common have Greenbrier syndrome, can lead to numbness of the limbs. 4, nutrient metabolic peripheral neuropathy: the most common is diabetic peripheral neuropathy, can appear glove glove sensory disorder. Numbness in the extremities is a problem that people often encounter in life, usually disappears for a short time to relieve, but if it lasts for a long time, it may be a problem in the body and requires timely medical attention.