Guild Wars 2

I’ve had some repetitive-stress injuries in my forearms from gaming, as well as massage, which is my profession. Some things you can do out-of-game to work with your injury:

—Ice the area of inflammation. Time spent icing should be a 1:3 ratio (5 min on, 15 min off, for example). This will reduce the inflammation, and combined with rest, is crucial. If the inflammation doesn’t go down, then you are just constantly injured and building up scar tissue.

—Rest. Take a break. Letting the area heal will mean less pain and downtime in the long run.

—Strengthen and stretch, when it is not inflamed. You didn’t specify whether the area of concern is your outer elbow (extensor group), or inner elbow (flexor group), but an exercise like curling your fingers into a fist 5-10 times, followed with 5-10 vigorous finger extensions from a loose fist into an open splayed palm, can work both sides of the forearm.

Another forearm extensor and finger conditioner is to place a thick rubber band from say, a bunch of broccoli, around the tips of the fingers and thumb, then spread your fingers and thumb out against the resistance of the band. Again, 5-10 times, 1-3 sets.

I will also second a Razr mouse as good for reducing finger gymnastics, its pretty great.