I've had rashes all over for at least 6 months, maybe longer. They are more visible after a hot shower, but are still always visible.
I eat pretty much the same foods all the time, and generally use the same shower gels/shampoos.
They don't iche. I don't think they're bug bites. I went swimming in a lake earlier in the year, but I think these existed before that.
I'm in my 20s. White, female, fair skinned. No recent sun exposure. Large. The rashes are on my side/stomach, back, sometimes legs. I don't have any allergies or health conditions. Drink a lot of milk/dairy. The rashes are still there, even after moving, washing sheets (and getting new ones), wearing same clothing items or getting new ones, while vacationing elsewhere, while omitting dairy products a few days, while trying other foods a few days. Rashes are still there, no matter if it's cold or hot outside.
What could this be?
Attached is a photo of my upper leg.