Hello Doctor, I had my first injection (Rituximab) for the treatment of B-cell follicular NHL on Fri 24 Jan - into my right arm. I am a fit, active (military) 46 y/o male. My arm is now aching really badly, from the elbow (where I was injected) and out into the bicep and forearm. Is this a side-effect to be expected? Is there anything I can do to ease the pain, aside from icing it which seemed to help last night, and is it likely to ease off? Finally, online literature seems to suggest that the first Rituximab injection be given over several hours - mine was administered in one injection - 30 secs at most - was this a mistake by the nurse or are there different approaches? For completeness, my next treatment will be Bendamustine, this week. I didn't see this one coming! Sincere thanks.