In reality I'm not particularly afraid of heights, but last night in a dream I was terrified that I was going to fall off the top of a building - as if I had acrophobia. It *was* dangerous in some places (I was climbing across a high roof to escape from a prison) but sometimes the fear got so bad - even in safer areas - that I had to lie down on the roof. Once laying down I couldn't stop gripping the roof really hard and feeling like I was rolling towards the edge.

Has anyone else experienced some sort of phobia in a dream that you don't have when you're awake? If so, I wonder why this happens.