Sitting and sleeping clinical symptoms of leg numbness, the following common causes: First, the sciatic nerve compression, sitting and sleeping, continuous pressure on the hip muscles, too long will make the sciatic nerve below the pear-shaped muscle inflammatory edema, the patient’s leg sensory conduction function, there will be a corresponding impairment, can be manifested as leg numbness symptoms. If the compression time is short, the patient can move for a period of time, the symptoms can disappear completely. Second, the patient suffers from lumbar disc herniation, lumbar spinal stenosis and other diseases, sitting and sleeping will overload the lumbar region, and maintaining a sitting position for a long time will further aggravate the lumbar disc herniation and lumbar spinal stenosis. Symptoms of numbness in the legs can occur, accompanied by weakness of the leg muscles. The above reasons are common causes of leg numbness produced by sleeping in a sitting position, to be treated in a timely manner, in order to make the symptoms quickly relieved.