L.L.
He might be "allergic" to mosquitos...my oldest is, and she swells up SO bad from them. Unfortunately, we live in an area with a high mosquito population all summer, so there's really no escaping them. Bug spray doesn't really seem to work.
Whenever she gets bit, I try to hit it with a cortisone or mometasone cream right away (she has a strong prescription) because she will scratch them bloody in her sleep, and they scar. It literally took about six months for last years bites to fade...I feel so bad for her!
So near the eyes, I wouldn't put cream on it without asking a doctor first...but definitely the benadryl or claritin to stop the itching and swelling.