Any ideas what this rash (?) might be?

I know people are going to say “go to the doctor.” No worries; I will go to the doctor if I need to, but I am nowhere near that point. I am looking for ideas, not medical advice.

So anyway, I have tiny blisters. There is a loose cluster about 2” long in the crook of my right elbow, a similar one on the back of my left knee and larger ones (4”) on my calf and lower back.

The weird thing is that I have individual blisters popping up randomly all over my body. One here, one there. No pattern at all. Probably about 10 total at the moment.

I don’t think it is poison ivy. Not only does it not look quite like it, but poison ivy it spreads like mad on me and I go utterly mad with itchiness.

They do itch a lot sometimes, but I usually feel nothing more than a tingle of irritation. Also, it does not appear to spread to other people or other areas of my body through direct contact.

Probably unrelated, but I have also had inexplicable diarrhea for the past several days.