Surgery? No. It's most likely hereditary (which you won't really be able to do much about) or it is caused by stress. Do you have a high stress level in your life?

I'm seeing a dermotologist this month to check things out, and from what I hear i'm at the prime for this to be treated and im told that there could be treatments to counter this.

Thats a good idea to get that checked out b/c 13 year old sshouldnt be losing alot of hair. U shed 100 hairs a day but if your hair is getting very thin then there is something wrong or you are realy stressed out