Yeah Mpost you bring up good points. There really are only so many pathogens in the body, so it could be that the immune system is picking up a bit of pathogen debris due to therapeutic challenge and then gets sent into some massive red alert
overdrive. Almost like a glitch in the immune system, but while I think immune system genetics plays a role I bet pathogens might also be skewing the immune system response as well, amplifying certain things and undercutting other aspects.
The thing is, my guess is that herxing is not a monolithic entity, I think it is likely a multitude of things with high variation based on particular pathogens and immune system make-ups. Some people have major issues with the detox pathways as well, so this exacerbates the situation or backs up the clog creating amplified herx responses even if not much pathogen is being derailed.
All I know is I've never been able to get around what I consider herxheimer responses. Effective meds bring out this response and it is slow and grinding but it is after those therapeutics that drive those responses that I eventually see improvements in my symptoms. I think it is because of my immune system and the particular pathogens I'm dealing with, coupled with genetics that may present issues in how my body detoxes. Also, no one can say the exact concentration of pathogen that resides in my system, I'm dealing with some form of bartonella/BLO and it is super responsive to therapeutic challenges. It could very well be there is a high pathogen load and that it affects the whole vascular system plus various other organs and tissues. The vascular system encompasses a hell of a lot of surface area so there is plenty of room for large amounts of pathogen colonization I think. I also think that the length and severity of my illness also plays a role in these treatment challenges and herxes.
Plus, as I've gotten further into treatment these herx responses have become less and less of an issue, I'm guessing this is due to the fact that there is less and less pathogen load. Earlier on in my treatment journey I could barely manage one small dose of monotherapy, I can manage much more aggressive therapeutic combinations now. This leads me to believe that the pathogen response to medication was the driving force behind my "herx" responses, whether they turbocharged immune storms or die off or whatever (I think it was combos of these things). As the pathogens get whacked over time they produce less and less "herx" response for me, probably because there is less pathogen there to respond the potential for severe herxing gets diminished.
Unfortunately no one can say exactly for sure. There just doesn't seem to be enough hard evidence or science on this phenomenon, and whenever there will be I think it is going to show us that there is high variance and multiple reasons for how and why this phenomenon presents, and presents differently on a case by case basis.
Btw Mpost thanks for that link to the LymeMD post. That is interesting how he parses things. I'm going to keep reading up on that, he might be on to something.
Post Edited (sebreg) : 9/14/2017 3:26:15 PM (GMT-6)