That's how my TOS pain started --- from using a mouse. I continued my job that required heavy excel/spredsheet use and it got worse and worse. I ended up quitting my job, getting workers comp, and retraining for a new career. I tried everything to keep my job ---- I used a foot pedal to click the mouse, I clicked the mouse with my knees, I put a clicker in my teeth to click the mouse, I bought software that let me move the mouse by putting a dot on my glasses and control it that way, I used nib clickless software (dwell click), I used ergonomic mice that have your hand straight up (like when you shake someones hand), I used a mouse that I could control with my feet, ---- nothing worked. The TOS got a little worse all the time and eventually took over. Looking back, I didn't understand that the mouse wasn't the problem. Having my body in a certain position while using the mouse or doing desk work was the problem. My left shoulder is screwed up and if I lift up my left arm too much/high, it stretches my nerve and irritates it and compresses it in certain areas. That problem still exists after surgery and I am careful with how I use my body. The upside is that my BP is not irritable any more (for now --- and hopefully forever) and doesn't cause as much disability.

Is there a position of comfort for you? I find that if I lean back and put my feet up and put a laptop on my lap (with my head looking down at it) -- this is a less stressful position and keeps the harmful movements to a minimum. I use my position of comfort when I study too. Taking breaks is still important, but I can last longer.

Best wishes for all my fellow TOSers.