Pain?

This might be a strange thing but does anyone else not feel the pain of scratching until you're done?

For example, I can stratch an itch on my leg for example, after the itch has gone, it'll start to hurt so I need to stop. But that doesn't happen on my eczema ridden areas, like my face and hands. I'm convinced that if I didn't bleed, I'd scratch until I hit bone. Does anyone else get that? I liken the feeling to orgasmic, when eczema itches, there's literally nothing better than scratching and scratching till it's raw and weeping.

This honestly sounds so gross but I have a feeling I'm not alone in this feeling. Obviously afterwards I'm in agony because well, I've took about 3 layers of my skin off but I could very easily go back in and keep going and it won't hurt