My husband has been getting severely irritable in the afternoons for the past 3 weeks. And there doesn't seem to be a mental, or environmental trigger for these episodes. I am grasping at straws trying to figure out what could be causing these episodes and I began to wonder if it could be his blood sugar b/c sometimes he wakes up in the middle of the night craving sugar and if we don't have anything sweet he eats granulated sugar. Does any of this sound familiar? Or am I on the wrong track?