It was pretty frightening in all honesty, beyond that I'm not sure, it quite honestly might not have been serotonin syndrome after all, just anxiety from being needed to sort out some system-critical work issue and being too incapacitated to do so. I did it just now (3am) in about 20 minutes, requiring 4 lines of code over 2 module files and a short debug period, in fact it was one of those fixes that made me wonder why this was the first time it popped up since the previous versions should have bugged out sooner as far as I could tell... it was in a sense an outside context problem though since I did quite a bit of prep work Sunday evening with the explicit goal of making sure no one would need to contact me with anything urgent on Monday... alas... here we are.
DCK is more serotonergic than regular K I believe but my only remembered evidence of additional risk compared to K is a few anecdotal reports from reddit bros of people having seizures combining SSRIs with DCK. I seem to not be very seizure prone, in that I've never had one, but I'm also (usually) pretty careful... I'm overdosing benzos a bit recently too because fuck, man, I just can't handle the SSRI induced anxiety optical and the dragged out pressure of getting ready to leave the company I part founded and can no longer stomach working within. I definitely won't be doing any more DCK until after I'm done with SSRI treatment anyway. I actually applied for a consultation for adult ADD recently with the explicit goal of getting more prescribed drugs (my therapist suggested if you're going to self medicate, why not do it through the proper channels? This may not have been exactly what he meant but whatever). So we'll see how that goes. Today I want nothing more than to just lie in bed but I can't because of my complete abdication of my responsibilities yesterday so that will have to wait.
Noted also about instincts surrounding hospital visits... I have a strong, strong aversion. Partly I guess because I don't want anyone to be able to say oh well it was obviously going to happen eventually! Although that said, I think my decisions recently to get my obvious if arguably, mercifully, mild mental health issues on some kind of official record are a way to take some ownership of them and be able to have something to point at medically if shit ever does hit the fan, so to speak. Anyway my planned 6 months total abstinence obviously was indisputably cut short, I'll generously mark that K/DCK episode as my first true lapse since I find it hard to give too much of a shit about a few beers now and then. Maybe I'll try to follow it up with at least another 2, maybe a second attempt at 6, fuck knows I dunno, I'm sure it'll be OK in the end.
Evidently posting in this thread is not an appropriate substitute for dialing the emergency services in times of crisis

, not that it should be or I would expect anything different. Anyone else fearing the worst, call a fucking ambulance, don't just post on a forum where you might be in cardiac arrest before anyone sees it.
Peace, love, and good fortune to you all.