Reddit mentions of Repetitive Strain Injury: A Computer User's Guide

Well, first of all, did you talk with your boss? They might be able to work something out with you.

Anyway, I had RSI issues that affected my work too. The general practitioner I went to was not very helpful (and many are not interested or knowledgeable about RSI), but they did write me a prescription for occupational therapy, which was quite helpful. Between regularly doing the exercises my OT gave me and improving the ergonomics of my setup (I absolutely will not just place my keyboard and mouse on a desk; I need a keyboard tray) I have gotten it under control.

I don't think there's going to be good dictation software for programming. But you could try installing some software like Workrave. This kind of software will basically set a timer (which can be configured) which encourages (or forces, depending on how you set it) you to stop using the computer and take a break at set intervals. It kind of messes up your productivity, but I used it when my symptoms were at their worst.

Also, I highly recommend these books:

• Repetitive Strain Injury: A Computer User's Guide
  
  
• It's Not Carpal Tunnel Syndrome!: RSI Theory and Therapy for Computer Professionals
  
  There is a ton of misinformation and bad advice out there. Don't buy a brace and use it all the time; that's the wrong solution. You need to strengthen your hands and wrists.
  
  e: One more thing: a lot of us with RSI have a tendency to strike the keys way too hard. You should try to work on reducing that impulse, if you have it.