Spots after paddling pool

[MummaPI]

Looks like hives, my daughter started yesterday with them on her torso, legs and bottom and now my son today in the area where his trunks had been. Anyone know what this is? They have been under the weather this week but nothing major.

Chickenpox , mosquito bites , or folliculitis maybe?

Both had chickenpox, too many for bites but folliculitis I did wonder about. Dont know much about it