My wrist hurts from typing all day, so I have wanker's cramp.
wanker's cramp
idiomAn ache in the wrist caused by repetitive movements.
After spending ten hours straight on the computer, he complained that he had developed a bad case of wanker's cramp.
The journalist suffered from a persistent wanker's cramp, an inevitable consequence of his relentless, late-night pursuit of the deadline.