Worry about hives, or just from chlorine?
My PA DD had a slowly-developing case of hives that lasted 2 days and is basically better this morning. We have no reason to believe she ate or came into contact with peanuts. She's had no other symptoms. But she woke up Friday morning with a few itchy blotches she thought were mosquito bites, but weren't. As the day went on she developed these blotches all over her body, but they didn't look like hives. They weren't raised at all. We gave her a bath and some Benadryl eventually. Yesterday, all blotchy again. At bathtime, they'd turned into hives, the big, raised, irregular classic ones. We gave her Benadryl and checked her peak flow, too. She's been fine in every other way. This morning, her neck and torso are clear; she just has a few flat blotchy areas on her legs. She had swimming lessons this past week and she didn't get a bath after the one on Thursday, the last day of them for the week. She doesn't swim in chlorinated pools often, but this has never happened, even with swimming lessons in this same pool. It wasn't immediate, so it isn't cold uriticaria. She does have chronic eczema in two areas, but this didn't seem to be eczema. I've written down everything she ate in case it continues and we start to suspect a new food allergy.
Anyway, any ideas? I've read some of the old threads, and I know hives can be just mysterious sometimes. She's had one or two tiny facial spots at many times, but this was large and widespread, but mostly not involving her face. It reminded me of the hives she used to get when she was first allergic to peanuts as a 1YO, but not of the reactions she's had since then. And her fingers and toes didn't swell with this, and she had only one hive on one ear. I didn't want to bring her to urgent care, because they usually know less about allergies than I do. I was set to call her allergist this morning, but it's basically cleared up.