UPDATE Re: tingly/crawly sensation on forehead

Well, things are going pretty good hear except I have a faint itch all over my body -- can that be as a result of the parasites dying inside me? I am using the zapper for at least 8 hours a day (terminator) and taking my oxygen supplements, and I am using
http://www.purifyyourbody.com
foot pads that I found in a store and then can buy them direct now.

The DE is actually quite tasty. For some reason my body seems to crave it. When I was a child I liked to eat dirt. I know that sounds weird but someone told me once that it means I had a mineral deficiency.

Right now the crawly sensation on my forehead is almost gone, not quite... but almost. But I itch. My scalp itches and my arms and legs and back and sides and stomach. Not bad itching, but just so that every few minutes I want to scratch an area lightly.

Any suggestions as to what this could be?