I've been dealing with this same issue for a few years now. I use a small needle to poke a hole right over top of the hard white thing. Then I use the head of a bobby pin to apply pressure over top and, if its in a less fatty area, it just pops out. Usually with some sort of small hair or fuzz attached. Then it leaves a deep hole and bleeds like crazy. Then it scabs over and heals completely in a week or so.

I've had the same issue with doctors and dermatologists and nobody I've seen knows...they just guess like we do. Maybe its GMO's causing this. It seems like we all started getting this after mass introduction of GM corn into our food supply. I also got that damn swine flu vaccine. Seems like it started sortly after that. Probably a coincidence but it makes me wonder...