There's very few things I'm allergic to, and hives are my only symptom. It's come to my understanding that certain forms of hives can be inherited. I've recently discovered that my 3 year old son gets hives as well. I could pinpoint exactly what caused them, since it was the only new food he had eaten over the previous 1-2 hours before the hives formed. I assumed that the hives would disappear after only a few minutes, since that's the way mine have worked for years. However, of the several hives that formed, all disappeared but one. Over night, that one that remained had turned into a hard lump. This lump is about the size of a large egg cut in half lengthwise. It's red and warm to the touch, and positioned on the back, just above the kidney on the right side. When I examined it, my son told me it tickled. When my husband examined it, he said it hurt.
Is it common for hives to do this, and if not, what is it? My son is still active and has an appetite. Nothing about his health has changed. He doesn't have a fever or nausea. He's just a normal 3 year old with this very odd looking lump on his back that started as a simple hive. Any input would be greatly appreciated. Thank you. Kim :confused: