I have been reading that there is still no reliable tests for any of the TBI's.
As my late LLMD used to say - "Absence of proof is not proof of absence"!!
"Conditions": Lyme Disease (neuro, gastro, bone, brain, muscle, hearing involved), STARI, RMSF, Hashimoto's Thyroiditis, Lyme Arthritis, Neuro LD, FM, Chronic/acute EBV, IBS-C, Diverticulosis (& "itis") & now Lyme arthritis (?).