My daughter is 15. She went for a power walk Monday morning along a nature trail. When she got back to the car about an hour later, she began to break out with a rash on one side of her face. Through out the day, the rash increased and eventually spread across her entire face, including her forehead. She complained of her face feeling tight. By time she showed up at my work, around 4pm, she said it felt like her tongue was getting too big for her mouth. It didn't look swollen, but she was talking a little funny. I immediately gave her some benedryl. An hour or so later, she said her tongue was back to normal, but the rash was still present. This rash is a very fine, pinpoint sized raised bumpy rash and although each tiny bump is not red, her whole face is. Her doctor said to just keep giving her benedryl every 4 hours. If she wakes up with it tomorrow morning, I'm supposed to take her back. Now it looks like it might be spreading to the backs of her arms and knees. She hasn't eaten anything new. No new perfumes, soaps, nothing new at all. She did notice a 4 inch papercut looking scratch on the inside of her arm shortly before the rash began, but no clue if this is related. She doesn't know how the cut happened, but it happened during her walk because it was fresh when she noticed it...and the cut was stinging. It somewhat reminds me of "prickly heat" or heat rash that little ones get when they get overheated, but I'm pretty sure that isn't what's going on. Any ideas? I'm trying to gather as much info as possible before her doctor's visit tomorrow.