Identifying what this is?

Hey all,

I've got a question regarding a sort of scalp or something problem I may have. If anyone could help me to firstly identify this problem, and secondly find a solution I'd be very grateful.

All my life, ever since I was a kid I've had a tiny tiny bald patch on the back of my head. It's never grown, and I've never had dandruff or anything like that. Whenever I have short hair, it's not noticeable as my hair is always dry, but whenever I grow out my hair it can be seen if I push my hair forward to bring it down, especially if it's wet or has mousse or some kind of other "wet" styling product in it.

Usually it can be covered up as I have thick, dark curly hair, but I don't want to have to constantly "cover up" a certain area of my head.

I'm definitely not balding. I've had this my whole life. But is there anything I can do to fill out the patch?

Thanks!

Here are some pics: (Excuse the webcam quality please)
 
http://geocities.com/divine_cha0s/bedhead.jpg - Bed Head

http://geocities.com/divine_cha0s/wethair.jpg - Hair after a shower