I found rest to be the best medicine in my situation - I had a repetitive stress injury that lasted a few weeks.
Avoiding other tasks that contributed to fatigue helped (I banned myself from video games), and changing around my workspace to make it more ergonomic helped also. In addition I set max. time limits for typing/computer work, and took frequent breaks.
You may find you need to immobilize your wrist(s) at night. Oh, and DON'T do what I did initially, which was to take an aspirin and try to work through the pain. It was a Dumb Thing To Do(tm).
hugs I hope you feel better soon!