I am posting this question here because I wanted to post it on the Super User stack exchange, but has some overlap with user experience. If more appropriate there, please migrate my post.
When PC users use a mouse, for instance in an office where a lot of clicking is required (for instance, a parcel delivery office or a medical services office or a city public services office), the ligament by the knuckles might get a lot of usage, and get worn out. It may eventually even hurt, and you may get a mouse tremor from mouse usage.
Programmers, sometimes, resolve this problem by delegating mouse usage to the keyboard. Office users as describe, may, have this option (keyboard shortcuts and hot keys), but, they may have to deal, in some, cases, with software that does not offer this option.
So, I was wondering, would it be helpful to have a digital tablet mouse like those provided on laptops as separate hardware pieces that can be placed in place of the mouse (and would this help, or would it make things just worse)?
For instance, do such hardware devices exist?
Is there software that allows you to program such devices, such as, digital tablets, as mice (for instance, one may already have a digital tablet they were not using and may want to use it as a mouse, but where would they find the software to make it possible)?
Finally, as a user experience person, if you think these solutions are not really viable for mouse tremor, how would you design a better mouse to use as a substitute to deal with a developing mouse tremor problem?
So, this post is also about ergonomics.