someone found my blog today by typing 'masturbation causes carpal tunnel syndrome" into yahoo search.
i'm sad that they didn't find much advice here. my initial thought is that no, masturbation does not cause carpal tunnel because of the nature of the action. it's really more of an arm movement than a finger or wrist movement, so the worst you might hope for is a case of tennis elbow. of course this all depends on your particular technique. are you feeling any specific pain? i am so sue johansen.