I have been having a similar head pain for close to ten years. Only mine moves around and sometimes it feels like it is trying to screw a hole in my skull. Other times it feel like it is sawing back and forth. One time it was trying to get out of my head by squiggling around. The pesky sensations wake me up at night when I am cleansing deeply. Once behind my ear. Once on top of my head. Once above my eye. So they are on the move. The headaches started about 20 years ago, but the movement that lets me know a parasite is causing it didn't start until I began systemic cleansing and deworming. I am still hoping to starve them to death or train them to go into my intestines so I can be rid of them. Not sure what would happen inside the skull if a parasite died and started decomposing, but seems like it might cause some inflammation. Last think I need is an inflamed brain. You've got some time. It will be ok. parasites want the host to live as long as possible because they die when you die.