Just an update from today, mixed feelings. Last night I got unbelievably tired from 6 PM forward that only started to pick up again around 10 PM, so it's as if it caused some weird pause in the usual circadian rhythm there. When I had my second mug of coffee of the day around that 6 PM mark and my cistus tea it's as if they didn't do anything at all. The nicotine potentiated the coffee a bit in the morning but later completely blunted the stimulant effect. I also noticed though the nicotine itself flared that burning brain feeling a bit at random points throughout the day, it didn't flare later when it usually does and it hit a bit earlier. The other day when I tried NAG it completely eliminated it altogether and I'm interested to see with a lower dose if it'll do that again and I have some kind of repeatable positive. I also wasn't able to sleep as well last night either but it was a strange insomnia. I wasn't restless at all and was actually pretty comfortable but my brain wouldn't shut off and took a lot longer to actually drift off.
Today I woke up feeling really heavy eyed and groggy, a bit better than yesterday but still felt like I had some kind of mild cold. The throat doesn't hurt today anymore and I have nasal drip with random aches all around with no real pattern besides in my tailbone (this appears to be immune triggered and usually comes with the feeling where my spine connects to the back of my head, not sure specifically what triggers it besides knowing now that nicotine does for some reason). There are positives though as my senses are clearer today and I was able to sweat in my arm pits and bottom of feet (this one was new to me I haven't felt anything there in well over a year) and I was able to work up a sweat easier. I appear to also have more all around skin sensation and I noticed I'm having more urges to do hobby things again. That one is kind of hard to describe like I feel gears turning neurologically where there was more apathy before. All around though I still feel a bit under the weather today, hope the positives stick though.
edit - Definitely in PEM right now, as I tried to listen to music before but didn't get very far before all sound induced immense amounts of stress on my brain causing the usual head pressure, dizziness, brain fog, sudden anhedonia in relation to doing anything but sitting in silence, and some nausea/digestive distress. But ever since the nicotine test here there is definitely something under all this that is now working that wasn't before. The problem is when whatever this is working is working it's harder to tell when I'm hitting the wall and in danger of crashing so I need to use more subtle clues and past experiences to not allow that to happen.
I'm going to monitor how I feel tomorrow and take things from there. Regardless I'm going to try a reduced dose of NAG the morning after tomorrow. I'm also now wondering though what exactly the mechanism is for the sound intolerance as in my case it's clearly also triggered with the intolerance of all things stimulating and comes with a little brain burny feeling returning but now only with more cognitive back up behind it since this nicotine experiment (only way I can describe it unfortunately). Typing more also contributes to making this worse but I need to get this out so I'm continuing to finish up this post here. The initial nicotine window that was very short and THC (for longer periods of time) do the same relief of this ENTIRE symptom cluster temporarily so it means this is all the result of the same brain inflammation but what would be useful now is finding specifically what it is that is being triggered that causes the symptom cluster to appear and ramp up as the offending stimuli continues which is essentially everything under the sun the worse it gets. IT appears now no matter how bad this gets though since the nicotine turned whatever it did on again that "cognitive backup" remains the same.