With the dry eyes, they should run the test for sjogrens IMHO (not a doctor) as with one test they can figure it out.
Low cortisol usually means a loss of weight, not increase. I had elevated cortisol myself - and while usually they have diabetes and high BP, I did not. So you can vary quite a bit with cortisol issues which can make them complex to diagnose.
Adrenal fatigue is not medically accepted.
It means... you need more testing.
Fatigue is often related to cortisol. Have you had any other testing - like sodium or potassium?
Have you lost weight? Do you crave salt? Is your BP low?
I'm craving sweets. I've actually gained wt - always wanting sweets and no energy to work out. My BP is usually low but has raised in the past few months.
Before anyone thinks about it I am not diabetic - A1c is 5.4.
I'm wondering about Sjogren's syndrome vs adrenal fatigue?