[I guess the dream itself was longer and this is really a fragment, but since it was shocking enough to keep me wondering about it, I'm making it a whole dream.]
I dreamt that I was wearing a long scarf around my head. I took it off, revealing my head. Most of my hair was gone, I still had some in good condition near my forehead, but the rest of them had died and dropped off since it didn't look like it'd been shaved.
When I looked more closely, I saw there was also a hole in my head, on top of it, a small thumb-size and dry-looking wound with some dried blood around it. It let out a dry crack when I tried it with my finger, and when I tried it I noticed the hole was wider than I had first thought.
It was about 2 cms deep, and my scalp was cracked almost from my forehead to the back of my skull. The skull itself was almost showing, and as I ran to my mom yelling that my skull was showing, I woke up.
[before I dreamt this, I also "dreamt" of a hovering figure next to my bed. It showed up twice and I couldn't tell what it wanted. I was really sleepy and as I asked if it had come to take me away, it disappeared. If you have ANY IDEA what this whole dream with the hairloss and such could mean, give it a try, it's important. :) Thanks.]