Hello, I'm 16 and have been experiencing lower back pain for the last 9 months. At the beginning I felt slight pain in my back while playing volleyball which got worse with time, eventually I decided to take a break. After 3 months of resting, I wanted to start playing again. The first day I was ok but every next day the pain was slowly coming back. I was diagnosed with shermans disease around 8 months ago and have been taking a medication which my doctor perscribed(piascledine) but I feel like nothing has changed and if I try to get back to playing, the pain will occur again. Its in the left part of my lower back, really close to the hip area. It only occurs when I am using my back muscles heavily and dissapears with one or two days rest but if I try to do sports again it comes back.
Any help will be highly appreciated!