Is edge and denial supposed to be painful in itself ?
 

I mean can the built up frustration, the tension of getting close and interrupting, itself cause pain ?

Well for men, it absolutely can... full blown blue balls can be incredibly painful. I don't believe there is a female equivalent of this physiologically. And certainly my female subs have all been able to maintain denial and edging much longer that I could do without being in significant pain. But without the other set of equipment I cannot say for sure.

Azyliux

Well I can: No, it is not painful. It is just frustrating.

Okay, me as being a guy makes me maybe not the best kind of person to answer this, but I have quiet some experience with edging some subs for an long period of tme. So my answer will be based on that.

As I heared from some of my subs is, that edging itself, and the fact that you get close and interupt repeatedly, doesn't cause pain. The only thing that can cause pain is the fact that after a while, you can get dry again down there. But we always solve that issue with some lubricant