Hi Heather
When I get snappy my husband usually says 'go check your blood', which I do and it can be up by 10 points, so he's normally correct and now know's my moods and is very understanding. When I started having hypo's at the end of last year (after being diabetic for 6 years) the moods were completely different, sort of like - not knowing what you were saying or doing, but he could tell the difference straight away and knew it wasn't the same.
I have spoken to a few diabetics about this and they all have moods swings when high and different mood swings when low. So you are right it does happen. Its great being in control of my levels and am at present (since early December 09) always between 4 and 7, lets hope it stays that way eh?
Judy