I keep pulling my hair out, how to hide my bald spot?

Im 14, Ive been pulling my hair out for years, but its been quite bad lately. I have this giant baldspot on the back of my head, and i dont know how to hide it. Itts like just a spot literally, like on the top of my head. I have had some emotional issues in the past and know im completely whacked up but im getting better, but lately ive just been pulling my hair out, like a lot. I have ton of hairballs lying around my room. Im planning on shaving my head maybe like next week, but as for right now, what should i do to hide my bald spot?