My daughter was being treated for headache pain and eye pain. Sh...

My daughter was being treated for headache pain and eye pain. She was put on prednisone z-pack which did nothing. The pain got worse so she spent 2 weeks in the hospital where they were giving her 1000 mg bags of prednisone in her IV. She finally came home and nothing was found. They did numerous MRI's catscans, you name it. A week after she was home she developed severe pain in both legs we believe is from coming off of prednisone. Does anyone know how longs this lasts, and what can be done about it. She averages 1-2 hours of sleep. She is on every kind of pain medication known to man but nothing helps. Please help!!