I'm a 19 year old girl. I've had chronic fatigue for the past 4-5 years. I've seen a couple doctors about it; they did blood tests (I don't know what they tested for exactly), found nothing wrong with my blood, and were completely useless after that.
I also get headaches a lot. I'm also fairly short (5'2") and have been underweight my entire life. I had a rash on my elbows for months, but that has gone away now.
Is celiac disease a possible explanation?