Hi these rash started appearing gradually since 3rd week postpartum. Started from belly button and s small area below it. Then it slowly spread. Appeared on the side of my hips too. Then knees but I scratch and it became hive like bumps and kept spreading. It will not look like hives/mosquito bite after a while if I stop scratching. Followed by in between my fingers and the section of fingers closest to knuckles. Wrist and then back of hand. Then I applied sunblock and makeup for my baby's full moon party and the same appeared over the next two days. The red dots just kept appearing on its own. It will turn red and feels like it's radiating heat when it's itchy and looks pink when it's not. It comes in waves. Some appeared at my chest as well.

During the day, either both knees/ both hands and wrist/belly/ feet would itch together. In the middle of the night everywhere itches and heat up at the same time.

On some bumps it feels abit rough in the middle.

Are these heat rash or hives or? I'm just lost and trying my best not to scratch it.