It is evident that orthostatic hypotension is a condition in which blood pressure falls after standing and characterized by dizziness, lightheadedness, and fainting. Similarly, neurogenic orthostatic hypotension which occurs due to impaired activation of nerves that squeeze the blood vessels is a remarkable feature of failure of the autonomic nervous system (ANS). Furthermore, the ANS often regulates the physical functions such as heart rate, breathing, and metabolism.
However, there is a less evidence for the test that enables the earlier diagnosis of synucleinopathies a group of brain diseases which comprises of Parkinson's disease, Lewy Body dementia, and multiple system atrophy. Will a change in heart rate help doctors diagnose synucleinopathies? Source: ScienceDaily
