by in large, it's lyme related. Lyme is a microscopic spirochete that bores into tissue, hides, goes dormant and resurfaces.
Testing is easy ... draw blood, wait at least 72 hrs and examine under a microscope. The 72 hr wait is necessary BECAUSE the pathogens hide inside blood cells until oxygen and food supplies become scarce.
Insurance rules require blood sample testing for lyme to take place within 24hrs of a blood draw. 19 out of 20 tests following this rule are false negative. (coincidence, you say?)
If you catch lyme (or closely related pathogens) quickly, they can be killed using colloidal silver (maybe other stuff too, but I am certain about colloidal silver). Use nano-particle cs if ingested, use conventional cs if a "NEBULIZER" is available. Typically takes 12 days to clear the problem, but 22 days is a typical treatment period.
If the disease has been present for a period of time, long term physical damage may prove unrecoverable.
Killing a pathogen is one thing, healing the damage left behind is a separate issue.