Permetrin schampoo has helped me some but of course he must have tried that already. I also put vineager on my head, the strongest one that I can find that smells like sh-t and sometimes a strong salt/water solution. Need to use good hair conditioning afterwars in case he has long hair, although probably not. For me bleach and hydrogen peroxide just destroyed my hair. Perhaps he should also think about cleaning his pillow often soak it in bleach for a long time and boil it in water. They can be hiding in there depending on the type of parasite. The pillow will not look so good after a few washes so then just buy a new cheap one. Same thing with other bedsheets although not as important in his case. I don´t think we have exactely the same thing although the "sensations" are the same. This might not help but it has helped me.