Plenty of tests. Autonomic medicine is not nebulous, more often than not what’s happening is some homeostasis failure/some peripheral nerve thing/brain damage. At the very minimum.
Widespread issues all over the body without readily obvious organ damage is nearly always nerves/brain.
99% of physicians wouldn’t know what to do with specialized test results anyway, even if they’d know what/how to order in the first place. Internists don’t know how to read PET scans, radiologists don’t know anything about homeostasis. general radiology cant even read head&neck scans, you want a specialized radiologist for that. geneticists don’t have the slightest idea about how to read nerve studies, which is actually a completely separate certification, not even every neurologist has it or does them.
Medicine is the game of super-specialization.
And nobody wants to bother to try to piece it all together for you. Very few MDs are actually able to, in the first place.
Ideally, you have a very broadly competent internist to figure out what direction to even start digging at, and then find the sub specialist who has the expertise AND interest in that area.
eg NIH’s section on neuro cardiology recently closed because this one dude who was REALLY into simply was too old, couldnt find a replacement or build a bigger lab that could sustain itself and retired.
At times you need a specialist trained and practicing in two different specialties: eg ENT + neuro, for example. Those can be hard to find. Neuro cardio more common especially now.
