Maybe someone with medical experience can answer this, but would a doctor really say "if your tiny baby has a seizure, just record it it will be fine" surely they'd want to look at brain patterns etc? It's not normal for a baby to have a seizure? What if he stops breathing?
This is absolutely not the same, but one of mine had viral wheeze, which is terrifying as they struggle to breathe and we were told give him an inhaler and get straight to hospital, every single time! I can't tell you how often we ended up there over one winter, overnight stays, interrogations as to whether we smoked around him. And viral wheeze is a fairly common thing.