My skin itches everywhere.

I've had a problem for over a decade of terrible itching that comes and goes. Usually it starts up when the whether gets cooler, but can happen at any time of the year. It itches the most where I sweat, like behind my knees. I also itch where my socks go, on my hips because the seams from my underwear and the pressure from my jeans make me itch. Then I can itch anywhere else. Right now it's my back & stomach.

I have digestive problems and I cleanse. I've done 6 liver flushes, take probiotics and eat right, but nothing stops the itching from coming back.

Here's the catch. I've looked up Rosacea, Psoriasis and Eczema and I don't seem to have any of them. Maybe I just don't know what to look for. I don't get regular rashes, I just tear into my body. My skin just itches until I bleed and then it itches some more. If I scratch it, it feels like heaven and it starts driving me insane after only 30 seconds to scratch again. Does anybody know what this is or what part of my body is causing this? Is this the start of Eczmea or Psoriasis? If so, then why hasn't it developed more over the past decade?

Lovey