I ended up in hospital in March last year with a pancreatitis attack. Mine ended up being due to my gall bladder and small stones causing a blockage. I was in hospital for a week, fasting for the first few days until things settled down and I had an op to remove my gall bladder then a liquid only diet, then moved onto bland food. From what I gather I've been pretty lucky and can eat any foods now without it affecting me.

I'm pretty sure there are a few girls here who have been through a similar thing and if you search on 'pancreatitis' you should find more posts and info.

Hope your dad is ok and it's nothing more sinister than a gall bladder attack causing this.