Neriz, the zoning out that you describe sounds like a little bit of dissociation. I do that too. It can be any time. People ask me what I'm staring at, or why I am staring at them, but I wasn't looking at anything, or even aware of anything. Focused really intently inward or something. It also happens when I am driving, and I forget to turn, and wind up going someplace that wasn't where I meant to go.

The hearing and vision changes could be dissociation too. I don't really know. On hypoglycemia, I don't think that docs like to diagnose that these days. My mother had it, and also got migraine headaches (not sure if t here is any connection there). The migraines headaches sometimes are preceded by vision and hearing glitches. Anyway, the advice they gave her for hypoglycemia was way off - they told her to consume massive quantities of carbohydrates, particularly alcohol - but that was 30 years ago and they know better now. Basically, there really isn't anything to do about it medically anyway except to maybe be aware of it and a possible risk of developing diabetes, and also to watch your diet - eat frequent small meals, and don't get too hungry.