Severe scalp irritation and hair loss

hello my name is Brian,
I'm 17 years old,I'm a senior in High School and I have quite the situation. For the past 2 years i have been losing hair at an increasing rate. i no longer have hair on the left and right sides of the top of my head until about an inch from the very back of my head. my hairline takes a V shape and the front of the V is about 3 inches off my browline now and its completely transparent. (i'm a blondie, like whitish gold) also the hair on my temples has receded back about an inch and a half and has gotten extremely thin all the way to the back of my head; its now completely see through. The hair i have is coarse, thin, weak, and brittle. i can now see all the individual hair roots on top of my head, its gotten so thin. it is very sore at the root as well and i have intense burning and scaling on my scalp. a gust of wind causes my hair roots alot of pain and i can watch hairs fall out of my head and land on my shirt all day. my scalp is also extremely red and sore. i saw a dermatologist about 4 months ago and he said my hair loss was just me becoming a man and gave me some fluocinonide for the irritation. but my hair volume has about halved itself since then and receded about an inch. my father has always had good thick blonde hair and so does my 22 year old brother. my grandfathers on both sides have full heads of white hair. thanks for reading my sob story and know that i haven't been too school in 3 days because on sunday it thinned overnight and i'm so embarrased.