<s>[INST] My son is 4 yrs old, and he keeps breaking out with red blister looking wheps on his face, hands and legs. Any ideas? We give him Benadryl and it goes away and may not come back for a couple days. We are remodeling the house, so we thought it was something that he was getting into there, but he broke out at daycare today. Please help. ER sends him home and doctor has no clue.... [/INST] Hi...Thank you for consulting in Health Care magic.By what you quote it should be an urticarial or a simple skin allergy. You can use Hydroxyzine at 1-2mg/kg/dose every 6th to 8th hourly for 7-10 days. 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 paediatrician.Hope my answer was helpful for you. I am happy to help any time. Further clarifications and consultations on Health care magic are welcome. If you do not have any clarifications, you can close the discussion and rate the answer. Wish your kid good health.Dr. Sumanth MBBS., DCH., DNB (Paed)., </s>