Thank you, @Kammas. RP's point that adequate sugar intake can stop allergies is a good one to keep in mind. I can certainly do more to work on keeping my blood sugar stable.
My stress reactions to intestinal transit vary in symptoms and intensity. When the reactions are mild to moderate, fruit juice and salt (or baking soda) often help. When the reactions are severe, juice and salt don't seem to do much, and it's challenging to force myself to eat or drink.
My glycogen storage is poor, and some of the stress reactions may occur when I've gone too long without eating or drinking, but the more common pattern is that I eat or drink (or do something else that stimulates the intestine, like lying under a heat lamp), the intestine starts churning, and then I get a blast of stress hormones.
Yea I feel you, its quite scary and annoying. Is there anything new your trying? What's the longest you've gone with no supplements? and how much do you walk per day ?