

Itchy, worse at night, mostly on feet but briefly showed up on knees. Started 2 days ago at night but got worse tonight.
Picture is the bottom of the feet after going on a walk. It started with what i thought were clustered bug bites at night on tops of the feet but has turned into a more rash like reaction today. Its been 2 days now.
Diet has been steady, and no new products or anything. I did move from a extremely cold like -20F climate to a warm 80F climate 3 months ago. So was thinking maybe heat rash? But this just started yesterday.