I used to be friends with someone on a forum for Avatar the last Airbender. She used to get outbreaks of eczema whenever she would eat a lot of sugary foods. Like excessively sugary foods. The first time she mentioned it, I was concerned, until she mentioned it was because she ate all of the sweets leftover from her sibling's sleepover.experiencing another random eczema breakout. it's weird since i don't have eczema and don't really have a history of it either aside from a similar breakout earlier this year and maybe some when i was a little kid. my arms (elbow to wrist) have gone all scaly/rough, and my left arm is worse with red spots and rashes and slight bleeding where there's a particularly scaly patch. rip. wish i knew what's causing it.
Figured I'd throw that out there. Who knows, maybe it could help you narrow it down.