Not even sure it’s heat rash, but that’s my guess.
Started a couple of weeks ago. Itches like mad. I get areas of red skin surrounding white raised areas which look like blisters but aren’t. Mostly on arms, legs and back.
Weird thing is they vanish very quickly. Shortly before posting this I had a large patch on my back (about the size of the palm of my hand) Looked like a nasty, blistered sunburn. Annoyed my for an 30 min or so and then vanished completely - the skin looks just fine.
Any ideas?