Your cortisol is elevated because of your allergies. It is your body's attempt to reduce the inflammation in your body caused by the histimine. And it is also fatiguing your adrenals. I used to suffer from horrible adrenal fatigue, now it is more mild to moderate.
Get the food allergy testing because eliminating foods you are allergic too will really help your adrenals. If possible, get allergy shots, they really do help symptoms.
Liver Flushing is helping my allergies (and indirectly my adrenals)tremendously.