In cases where back pain occurs in the middle of the night and not during the day, it is important to consider the mattress or bed board on which you sleep. Sometimes a bed board that is too hard or a mattress that is too soft may cause the muscles in the back to exert themselves for a long time to maintain a certain position while sleeping, resulting in localized strain pain. The pain will disappear after you get up during the day and move around to relax the muscles. It is recommended to try to change the mattress, if the symptoms disappear is caused by this cause. If back pain still occurs through the above treatment, it may be caused by muscle strain in the back or fasciitis in the back. At this time, there will be a very clear pressure point on the back, you can do physical therapy, external ointment or oral non-steroidal anti-inflammatory drugs for the pain point to treat, the effect is very good.