You bring up very good points. I am 62. However the few times I have been given prednisone, for bronchitis flare up, it really wiped me out so I am torn about rushing into taking it. If I had not over exerted myself prior to the hip, hamstring and knee pain I would be very suspicious that I have some inflammatory condition. So far the pain has not migrated other muscles other than some bicep soreness after the PT stretches and they are minimal. Was your pain debilitating? So you could not walk? Or constant and dull? Maybe pain level runs a spectrum of intensity. Thank you for the insights