Bald lines scalp irritation. Crown balding. =( HELP !!!

Hey i'm currently 17 years old. Just 3 days ago i've noticed a bald line starting from the swirl on my head going down, located at the back of my head. This swirl also leads to thinning on the crown. However i do not think i am experiencing any severe form of frontal hair loss. Please help im really freaking out ! Just 3 weeks ago i've been scratching my head as it was a little itchy. When i scratched, little flakes of dead skin would come of my head. However i didn't really bother as my head wasn't THAT itchy. PLEASE HELP =(

[Caryopteris]

You could try inexpensive things like, after washing your hair, rinsing it with very dilute vinegar.  Or you could mix some baking soda with your shampoo.  Both of these are cheap antifungals that won't hurt you (but avoid getting in your eyes).  

Or you could try Nizoral shampoo.  Or you could order Wella Regulate shampoo on line.  I think these things would help you get comfortable and have your hair growing back very soon.  

Do not scratch as it causes inflammation/scarring/hair loss.  An ice cube might give relief.