dysautonomia refers to symptoms related to the Autonomic nervous system.
"The autonomic nervous system regulates certain body processes, such as blood pressure and the rate of breathing. This system works automatically (autonomously), without a person’s conscious effort.
Disorders of the autonomic nervous system can affect any body part or process. Autonomic disorders may be reversible or progressive.
Anatomy of the autonomic nervous system
The autonomic nervous system is the part of the nervous system that supplies the internal organs, including the blood vessels, stomach, intestine, liver, kidneys, bladder, genitals, lungs, pupils, heart, and sweat, salivary, and digestive glands."
/www.merckmanuals.com/en-ca/home/brain,-spinal-cord,-and-nerve-disorders/autonomic-nervous-system-disorders/overview-of-the-autonomic-nervous-systemMine isn't severe and has gotten better since treatment.
When I stand up, my pulse rate goes up - used to be 110/120 bpm.
Now it is often just in the 90's...except on bad days...then it goes higher.
The NP at my LLMD clinic called it "limbic irritability".