What you're looking at is people with really bad gut microbiomes or other ongoing infections, not "CSS" - the behavior you're describing is called sickness behavior[1] and is produced by ongoing infections and blood infiltration by bacterial toxins like LPS (which coincidentally is used to induce mouse models of depression)
Rhetoric like yours is why most chronically ill people suffer for years and decades before getting any kind of diagnosis or treatment at all.
Rhetoric like yours is why most chronically ill people suffer for years and decades before getting any kind of diagnosis or treatment at all.
[1] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8960409/?report...