Sleeping until dawn when the lumbar spine sacral small abdominal distension get up to alleviate the pain may be due to sleeping posture is incorrect, lumbar itself disease, urinary, gynecological diseases and other reasons. 1. Incorrect posture, lumbar disease: sleep if you have been in a lying position, the mattress is relatively hard, will lead to long-term pressure on the lumbar and sacral region, local blood circulation is not good, while affecting the normal peristalsis of the front intestinal tract, may appear lumbar-sacral and abdominal distension and pain, the performance of the activities to reduce; second lumbar disease itself formed by the compression may also lead to the symptoms, such as lumbar intervertebral disc herniation, stenosis and so on. 2. Urological and gynecological diseases: some patients have the situation of drinking water at night, coupled with the metabolism of the night, as well as the anatomical location of the kidneys themselves, may also lead to lumbar vertebrae, sacrum and small abdominal distension and pain when they sleep until dawn, and the performance of the change of position will be alleviated; female patients, if there are gynecological diseases, may also lead to the appearance of the above symptoms, such as vaginitis, salpingitis, and so on. Sleeping until dawn lumbar spine sacral abdominal distension get up to alleviate may also have other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.