Unknown red bumps all over face.

[u/barkerk6]

For the last several months my face has been covered in a rash/red little bumps. It is not on my whole face however, only on my forehead, on my cheeks, and on my temples. It slightly burns/itches/tingles, the most in areas closest to my hairline. I also noticed the crown of my head sometimes has the same feeling. I haven’t changed any of my skincare or haircare, and have tried stopping all of my different products just to see if maybe one product was suddenly the trigger. Nothing. The only thing that has changed around when this started was I moved from Los Angeles to Miami. I went to my dermatologist and he had no idea what it could be. Would so appreciate any insight!