How Can Back Pain And Swelling Caused By Lower Vertebrae Be Treated?

my mom is suffering from a severe back pain since 2 months after taking an x-ray it is found that the gap between two lower vertebrae has reduced and also sometimes vertigo problem after laying on bed whenever she bends down and try to stand straight she feels severe pain in her back then slowly gets straight ,it has also be noticed that there is some swelling in that location please give us some kind of best solution