I have wegeners or GPA (kidney involvement, but am in remission) and will be getting my 4th Rituxan infusian tomorrow. I ve noticed I get lightheaded easily. I don t know if it s related to that or other medications, but I also feel shaky, like you do when you haven t eaten for awhile. I also hit my right arm....didn t seem bad, one did hurt, but the other felt like I just bumped it, but now I have two really big bruises. I m also taking 6 1/2 mg of prednisone. I ve been tapering, but have been on prednisone since the end of Feb. I haven t checked my blood pressure but it s been running normal the last month...since I started Rituxan. Should I be worried about the lightheadedness? it s been happening off and on for the last three weeks...about.