Remicade and colitis

Originally diagnosed with PMR and was taking prednisone in high doses for 2 years with ok results, except that as I lowered the mg of prednisone the PMR symptoms returned. New doctor diagnosed RA instead and put me on Remicade. After 4 infusions I am having severe muscle pain in my upper right leg. And on occasion the beginning of the same problem in my upper left leg. Affectsmy mobility and I am taking large doses of tylinol & motrin for the pain. Doctor says this is not a side effect of the Remicade. At first I believed him, but now am having doubts. Anyone else have this side effect?

I've had 4 remicade treatments on my 2 treatment they had to stop it after bumping it up to 20 cc cause it started respitory problems and made my blood pressure go up. now when I go for treatments I have to take 75 mg of benedril and 30 mg of prednisone, now i'm noticing leg cramps, muscle pain, joint pain, my hair is falling out more than it ever did before. I'm not sure if this is related. Now i'm having bruises that don't heel up and, i'm getting sick with a respitory infection and i get frequuent migrains I also noticed tooth aches , i try to stay away from sick kids but for my crohns and ulcerates colitis i'm eather bound up or running for the restroom.