Random Scalp Showing On Side Of Hair, Telogen Effulivium?

[Alpha Tortoise]

15YO And I've noticed an odd stripe of "nothingness" right along from my crown down to my side near the back of my head on the side, it's pretty weird, I don't if it's just natural or some male pattern baldness or anything but I can't really put a name to it. What do you think it is?

I have thin fine hair so I don't know if that changes anything, I also thought it could be from parting my hair forwards on that side causing the scalp to show more
Help??