Physical theropy symptoms and conditions

After 2 treatments of Rituxan, my uncle could barely walk into the doctor's office. It progressively worsened even after he quit the treatments, and now he has absolutely no muscle strength in his legs and has to be carried or in a wheel chair to go from one side of the house to the other. It didn't affect anything but his legs oddly enough. He went through a series of tests, x-rays, PET, Spinal Tap, even chiropracter, etc., and can't find any sign of cancer or attributing problems. The doctors think that maybe it was a symptom of the chemo treatments, more particularly the Rituxan since it began after the first and worsened with the second until he was unable to walk at all.

I am 48 yrs old, invery good health, very active in sports, I run 3 times a week, exercise, and eat healthy. I have been on Zorcor for 2years now. I have been experiencing muscle pain in between my left shoulder and elbow for about 6 months now. I have gone to my doctor and he has treated it as bercitus. He percribed physical theropy treatment... a month has gone by and no changes. So I tried a chiropractor, it's been 2 weeks and no changes... so that promted me to check the internet for possible side effects and I came across this website....and I can't believe all the emails I'm reading on the side effects other people are experiencing! I also am experiencing other side effects that I thought were not related and now I believe they are, AFTER READING THIS! Beside the muscle pain in my upper arm , I am experiencing:::: hair loss, leg cramps, memory loss, ability to communicate, pronounce words, forgetting, depression, blurred vision, hot flashes(thought that was because of menopause! and could very well be!) I take 40 mg a day, it the evening. IS IT OK TO JUST STOP TAKING THIS DRUG SINCE I'VE BEEN ON IT FOR OVER 2 YEARS?