its never the only problem in my opinion Blazer
firstly, once you have a chronic infection - it ALWAYS causes a cascade of other problems downstream - things like inflammation related issues, immune dysregulation, auto-immunity, neuropathy, gut issues, mood / mental health issues - and many more ..... its a long list - and they tend to be different in each individual due to the host response phenomenon - making a simple cause and effect analysis difficult as the end symptoms are so different - even when the cause is the same
but also - most of the time it likely wasn't the only problem to begin with - typically these pathogens do not make fully healthy resilient people sick - their immune systems deal with them - just as they are designed to - and like they do for the vast majority of pathogens we encounter in our environment.
for us to become sick with one of these chronic infections - something had to be at work already to lower our defences. so there was something upstream in the disease process to consider also.
chronic stress, chronic lack of sleep, are major immunosuppressive stressors - as is phycological trauma, physical trauma, or a major surgery - or just having acquired one too many pathogens over time that your body hadn't dealt with prior to exposure to the most recent chronic pathogen.
getting a acute viral infection is another such example- studies show its a major immunosuppressive event.
with defences dysregulated or down regulated by these stressors - chronic infections can become established
once established they have many mechanisms to avoid immune detection and clearance and keep the host sick - as that's what they have evolved to do over millennia. they wouldn't be around today if they had not evolved this trait - as the intervals between transmission events are too long for effective transmission if they cannot survive in their host long term. killing the host doesn't work - but being killed by the host defences doesn't work either - so they have evolved a way to sit in the middle ground.
again - because the actual root causes can be so far back in time - and may not have symptoms at that time or at least no symptoms we directly attributable to the current state - it makes the unpicking of the puzzle rather challenging - but i believe this is the correct frame work to use to try to understand it.
good luck with the treatment trials
as a reference point - be aware clear signals over a month of so of abx are often a rare event in the chronically ill - especially with chronic bartonellosis.
in my case i am making measurable progress - but its in the order of a couple of percentage points per month -and that's on combination antibiotics, plus all buhner's herbs, plus biofilm agents. You need quite sophisticated objective methods to even detect such a small change -