Do our lives inspire our dreams or the other way around? Is what we dream a twisted reflection of our thoughts or are dreams a random slideshow our brains try to form into a story? Either way, they rarely make sense and both philosophies can be applied to your main character.
What does your character dream about? Being naked in a crowd? Losing something important? Falling?
Give your character a dream. Then explain how his or her brain works to have caused it. Is it a reflection of his mood, life, feelings, or a compilation of memories?