What is "vagotonia"

n. (context pathology English) irritability of the vagus nerve that adversely affects the function of the blood vessels, stomach, and muscles

Vagotonia is the state of the autonomic nervous system in which the equilibrium between the sympathetic and parasympathetic nervous system is biased towards the parasympathetic, the opposite phenomenon being sympatheticotonia. There is an associated clinical syndrome with low blood pressure ( hypotension), low heart rate ( bradycardia), miosis, often cold hands and feet, a cold and clammy diaphoresis, severe fatigue, and sometimes vasovagal syncope.