Please help I'm desperate.

My mom braids my hair at night well now im getting little white things in my hair (i don't have lice or dandruff) and it gets in my brush. She looked on my scalp and said it looks like i have blisters all over. i have acne along my hairline and the bottom of my hair line going around my ears and all along my hairline and scalp. she thinks it's because my acne dries up and goes in my hair and because the blister type looking things are shedding dead skill. i don't know when i can go to a dermatologist. anyone knows what this is, has had it, or knows what it is? if so please tell me. it stresses me out so much from the white stuff in my hair and having to go out in public and to school. i'm 14