That is soo relatable Drewbie. When I had an attack of TN, it was like my bottom teeth were humped up where they should have been the valleys for the cusps from above. Sleeping on my back on the sofa kept them slightly ajar so that they did not touch and set off the pain. Nor could I roll my head to the side to cause pressure from with out.
The eating being a 'trigger'is classic for TN, as you likely have found out by now! Or brushing your teeth, etc. There are different levels of pain with it too.
I had to look up Keto Flu! I agree with your analysis there too! My husband has begun Keto this winter and it does require some adjustment from your body. He too, exhibited symptoms of the mental stress for a while. I am so happy that you are in a much better place mentally!! It does weigh on your mind in oh so many ways.
Please let us know how the visit goes today!
ATB!!!