Re: Bumps on buttocks?
UCanS - I know how something like this can drive you to distraction. I'm not sure of course what it is, just wanted to tell you my story in case it helps.
I get ingrown hairs on my skin in several places - anywhere where something, especially of synthetic material, rubs against the tiny hairs just enough to irritate them, open the skin a tiny bit, and then the hair turns and grows "in" rather than "up". They can be itchy at times, at other times, don't even know they are there.
What do I do for them? No ointments or bandaids or anything like that. When I bathe or shower, I use a natural loofah, which you buy at pharmacies or department stores, and gently scrub the area. It, over time, lifts skin cells, and frees the small hairs. Have to do it regularly, just part of the bathing routine, you know? You said you use washcloths, and they can do almost as good a job. A loofah won't cost over $10 or so.
Maybe this helps, if not, hope you find an answer soon.
Wishing you peace and comfort,