I've been moving so I haven't checked this site in a while. Sorry I'm late getting tot his.
I'm personally under the assumption that the weird-folliculitis, for me, is mites, in my case anyway. I'm not sure what sort, because I haven't actually been "officially" diagnosed (I'm just not in the mood to go to doctors anymore for this, since I've had NO success that way thus far), but it seems to fit the description of mite symptoms as well as reacting like mites.
(I'm not sure how we got them, but my whole family got hit with a weird red "dot" sore around the same time...and someone the dots took a liking to me but couldn't seem to make it on everyone else, leading me to believe it's some sort of animal mite that somehow finds my body habitable)...
The same thing that causes mange is what is likely causing your "incurable" folliculitis. He has a page or two for people too, but the treatment idea is the same.
The formula for a scalp soak is essentially
1/2 cup warm water
1/2 cup vinegar (or 1/3 cup hydrogen peroxide)
3 Tablespoons Borax (the 20 Mule borax laundry powder)
Mix, stir briefly in a large bowl until most of the borax is dissolved (some won't dissolve and that's okay), and then, leaning your head over the bowl, soak your scalp in it, wrap towel around head and sleep on it. Rinse it out in the morning.
I'm not sure of the duration...? I would guess every 2-3 days for a week, and then once a week for a couple months? (Also, the borax is an excellent thing to throw in the laundry when washing bedsheets and pillowcases, etc).
Another option for a borax cure: If you have extremely short hair, this may work for you: Boudreaux's Butt Paste (a diaper rash ointment for babies sold in US). It has boric acid in it, and is very effective too on the mites on the skin. My hair is longer, so I can't really get it fully onto my scalp, but have used it on any sore skin areas (neck, chin, etc) with excellent success.