Hi, this might help. My story: two years ago my husband and I started to be plagued by a similar thing. Symptoms: itching hair, a crawling feeling, things crawling randomly over the body - you feel it especially in the feet, ears, eyes and head. Like tiny little prickles. I also get the stabbing pains.
Fought it hard but it was only keeping the things at bay, at last found a website and products that help. Google “How to get your life back” by Richard Kuhns. I found it free on the web, I think you can buy it on Amazon. He has a number of products that work. Plus he’ll send you a questionnaire so you can see what you have. I suspect it’s collembola.
We’re now nearly bug free. Another thing that might also help is food grade diatomaceous earth. I’m super sensitive to it, so take half a teaspoon in a glas of water every other day, but the recommended dose is a teaspoon. Has made a huge difference and it’s super good for you. Good luck!