My 22 months old son had nasty rash all over his body during his cold recently. After 4 days of nightmare including a visit to the emergency room, it cleared up. He was prescribed for atarax which is anti-histamine. Since then this rash keeps coming back but severely, here and there on his body, often around his eyes. They look like hives, red & bumpy. It's been almost a month but it's still happening. Has anyone ever have any experience like this with your kids?