[ianaphysicist]

I was in pain for a year or more. I got a forearm massage to eliminate the knots. Then I changed my typing style to be more about comfort and less about what the typing instructors wanted. No problems in the 15 years since.

[colanderman]

I credit my never having had typing-related stress with being a self-taught typist. My hands rest naturally with wrists straight, unlike "home row" position which would have the wrists bent, and there are several keys which I type with either hand.

(I have had mouse-related grip stress, which I solved by switching to a trackball.)