Weird thing was that each bump seemed to have a minute blister, over a hair follicle. They burst really easily - literally one fingernail
scratch, fairly light, and they popped. Tiny amount of discharge, but just clear liquid. With that, no more bumps, and I was much happier.
Same thing, same patch, next day. Raised lumps, scratch, pop, no lumps and red area.
I thought scratching was a bad idea, and stopped. The next day the bumps were back, slightly red and scabby at this point.