Good morning N., my kids never had it but i did, I was a preteen, it was on my face, it was pretty bad, and of course they didn't have the creams then like they do now. Impetigo is a type of skin virus, like ring worms, and usually itch like crazy, and then discomfort. I had it during one summer, and us kids in the neighborhood spent a weekend in Imperial Beach, and went to the beach the whole weekend, well the beach water dried mine all up, my mom had been using desetin, that kept it from spreading, but the beach dried it up. Like you I have never heard of it being a on going thing, I only had it once. If this becomes a frequent thing with your son his doctor will advise you want to do.Don't be to upset with your husband some men believe us mommy's worry to much as it is, and then we read something that freaks us a little and the worring increases. J. L.