Multiple Scelerosis

I've had Multiple Scelerosis for 16 years. Never had any major issues. Had a recent flare, been hospitalized and had the high dose prednisone. I still have not regained mobility in my hands and my arms and chest area are very stiff. The hospital doesn't know what caused my flare. I was discharged and sent home with medicine with no answers and I'm not able to return to work because I am not physically able.