I went to a rock concert on Saturday... by the time the concert was over I was very lethargic and had sun rash all over my body... I figured, well it's the end of a concert. I crowd surfed, was and a huge crowd, so of course I was going to feel like crap. The next day the sunrash had spread and my face was completely swollen. I was also dehydrated and had to force myself to drink water. I didn't eat anything and I couldn't sit up. I tried to take a cool shower to see if that would help, but I almost passed out. Eventually by the evening time I was able to make it from my bed to the couch. But I was still so nauseous and dizzy that I still count bring myself to drink anything. Today is Monday morning and I'm not as nausous as I was but this sunrash is still extremely painful and my face is even more swollen. I can hardly see to type this. My eyes hurt really bad and my face is oozing a little bit. The internet tells me to seek immediate medical attention but I'm not too sure I should? Yesterday I would say my pain was 7/10 today maybe 6.5/10

Get yourself to the hospital. It is very possible you have sun poisoning.