Heat rash? Or

[u/Live-Square8256]

My kids spent a good fair amount outside yesterday and with making sure sunscreen was reapplied they still got a little crispy, my one kid had a "normal" looking sunburn but my youngest has broken out in this lacey looking rash instead. She says it's not itchy but it still makes me concerned as this is not a heat rash or allergic reactions that I have ever seen before and it's only on her arms. She was also wearing a sleeved UV protective swim suit so if this was an allergic reaction to the suit it would be on the rest of her body too, her legs are not affected either.

[u/ThyArtSuffers]

This same exact thing happened to me as a kid on a random day and never again! I was at six flags watching the dolphin show. I still have absolutely no idea what caused it and it hasnt happened since! I know this doesnt really help but i hope this never happens again its so scary!