Back pain after turning over at night may be caused by fasciitis, osteoarthritis, ankylosing spondylitis, etc. The details are as follows: 1. Fasciitis: fasciitis of the muscles on both sides of the spine, patients with a long time a posture will cause muscle ligament fixation, stiffness, after changing position, may aggravate the inflammation, resulting in back pain after turning over. 2. Osteoarthritis: Osteoarthritis occurs in degenerative changes of the spine, and improper sleeping posture and other triggers can cause back pain after turning over. 3. Ankylosing spondylitis: Ankylosing spondylitis patients resting at night will be affected by sacroiliac joints and spine, resulting in back pain and stiffness after turning over. These uncomfortable symptoms may be relieved after daytime activities, but will recur when resting. Back pain after sleep turning can also be seen for other reasons, and it is recommended that patients be admitted to the hospital in time to avoid further aggravation of the condition.