I have direct experience of this. My wife has had long covid for the last year, has had dozens of medical tests, and none of them have showed up anything except for POTS.
I can understand why a neurologist would suggest CBT. All my wife's test results are normal, so the neurologist has no remedies available. People do get psychosomatic illnesses, and in those cases CBT does help. That doesn't mean that my wife has a psychosomatic illness, but there's no test for that either - can't hurt to try
(FWIW this is not the way my wife saw it - she was pretty furious and felt like the neurologist was demeaning her condition)
I can understand why a neurologist would suggest CBT. All my wife's test results are normal, so the neurologist has no remedies available. People do get psychosomatic illnesses, and in those cases CBT does help. That doesn't mean that my wife has a psychosomatic illness, but there's no test for that either - can't hurt to try
(FWIW this is not the way my wife saw it - she was pretty furious and felt like the neurologist was demeaning her condition)