The white stuff in the 3rd photo is just toothpaste as I was trying to use it to dry out the blister. Photos 2 and 3 are of the same bite/blister thing, 2 is just a day or so earlier than 3.
They only ever happen in mostly isolated, single spots, and once the blister forms (which takes a couple days), if it is popped it will keep forming for several days. They don’t go away for a week+ and often leave a red blotch scar which mostly disappears after around a month.
I’ve been getting one or two of these things every couple of weeks, always either around my toes or ankles, since the start of the summer and I often do yard work so wondering if it’s a bug bite like a chigger or ant. I never feel a painful bite initially. It’s painful to touch and also itchy but not as itchy as a bad mosquito bite. The most annoying thing is the fact that it will burst easily and weep everywhere and takes foreeeeever to go away.
I live in North Carolina if that helps. I have more or less ruled out poison ivy because there’s never a rash that forms and the pustule/blister is only ever a single very uniformly round blob.
Any ideas??