Blisters from a mosquito bite on a child?

My son seems to enjoy a very weird reaction to mosquito bites. He get the normal red, itchy bump at first, and sometimes they shift away normally. But in a minute and then, after a morning or two, it turns into a cluster of tiny blisters that swells up and then bursts after several more days. It doesn't bother him horrendously, aside from expected pain and itching, and we enjoy to keep it covered because it ooze quite closely. I have never see anything like this. Has anyone else ever see something like this?Blisters from a mosquito bite on a child?
My daughter have the same item, as do I. We are allergic. I have other been allergic to any type of bug bite, and I've a moment ago recently discovered that my 2 year prehistoric daughter is too. A paramedic told me to give her some benadryl and to rub a tiny amount of alcohol over the blisters only to keep it verbs. As far as the blisters opening and popping, that's why I'm here very soon. My daughter's blister popped last dark and it's the size of a nickle. Now its an open wound. What to do?
It sounds approaching your son is allergic to mosquitos.