autonomic dysfunction

How is Autonomic Dysfunction Diagnosed?

Diagnosing autonomic dysfunction typically involves a combination of clinical evaluation and specialized tests. Some of these tests include:

Tilt table test - Assesses how blood pressure and heart rate respond to changes in posture.
Heart rate variability - Measures variations in heart rate with breathing and other stimuli.
Quantitative sudomotor axon reflex test (QSART) - Evaluates the autonomic nerves that control sweating.
Valsalva maneuver - Tests the ANS response to pressure changes during forced exhalation.
Thermoregulatory sweat test - Assesses the body's ability to sweat in response to heat.

Additionally, blood tests, imaging studies, and nerve conduction studies may be used to identify underlying causes.