Hi, I never thought of my blushing as a symptom of adrenal insufficiency, but I think it makes since. The sweating and heat intolerance are definetly related and caused be the insufficiency. 1/4 to 1/2 teaspoon of Sea Salt in water several times /day will help much with the electrolyte loss and general physical well being throughout the day. My armpits sweat easily when I talk to people. I read that this is related. I have always been a profuse sweat-er when I exercise. The book Adrenal Fatigue: The 21st Century Stress Syndrome by James L. Wilson touches on this problem somewhere in the last chapters.
Take care