At first I assumed they were insect bites
but became a bit weirded out when they kept appearing for
more than a couple of days. I've had them, going on, four weeks now. They're not that big a deal as I only get 1-3 new ones a day and by that point the ones from the previous day have stopped being itchy, and the ones from previous days have begun to disappear. Most, around 90%, of them occur on my legs and the top of my feet.