<s>[INST] My 6 year old was in the hot tub for a long while 2 days ago and now she has a rash on her torso and back that is itchy. Started of on her torso and was stingy. They look like tiny pin pricks and have an tiny scab over them. She s not allergic to anything that I know of. What could this be? [/INST] Hi, By what you quote it should be an urticaria or a simple skin allergy. You can use HY Chat Doctor.  Most important thing to be remembered is that it has a propensity to recur (called as second crop) within 10-14 days. If this happens, you can start using the same medicine, but I suggest you get the kid evaluated with your pediatrician. Hope my answer was helpful for you. I am happy to help any time. If you do not have any clarifications, you can close the discussion and rate the answer. Wish your kid good health. </s>