I use to do a lot of crocheting.....which is a lot of repetitive motion....Not only my wrist, but also my elbow started to bother me so much that I had to cease......basically, I quit crocheting. After two years, if I pick up my needle to work on a project, it isn't long before my old aches start to occur. The only thing I found to ease my pain was to stop what I was doing.....not what I wanted, but......I think ANY repetitive motion will cause this.