Lower body gusts of tightness has the following factors: 1, the most common factor is the lumbar disc problem, from the point of view of orthopedic surgery, lumbar disc herniation, lumbar disc bulge, sacroiliac arthritis, sciatica will damage the nerves of the lower limbs, will lead to gusts of tightness in the lower body. 2, gusts of tightness of the lower limbs is also related to cerebrovascular disease, in the cerebral blood vessels are damaged, such as the emergence of acute stroke, acute cerebral hemorrhage, acute cerebral thrombosis, Acute cerebral embolism, acute cerebral infarction and acute cerebrovascular accidents, touching the neurons innervating the lower limbs, the lower limbs neuron function is impaired, there will also be a burst of tightness in the lower body. 3, in the lower limbs of the infection, for example, both feet or bilateral calves, bacterial, viral or fungal infections will be retrograde upward, at this time there will be a dengue or the skin around the soft tissue infections, such as cellulitis, if you are not able to get rid of the infection, the skin can be damaged, and the lower limbs can be damaged. For example, cellulitis, if the pus bacteria continue to go up the infection, there will be a burst of tightness in the lower body discomfort.