Symptoms of parasympathetic nervous system dominance often include feeling depressed and cynical. An individual may be paralyzed by their fear or anger about their situation. There may be a decrease in clarity of thought as a part of a numbing process to avoid pain and overwhelming emotions.
When a patient arrives at my office in parasympathetic dominance, I often see a person who tends to be more fatigued and prone to depression and whose adrenal and thyroid glands tend to be underactive. They may experience multiple allergies. Other symptoms include weight gain, dizziness and light headedness, low blood pressure and diarrhea.
Many of my patients have already gone from doctor to doctor looking for a cure before they come to my office. In my many years as a holistic chiropractor, I have studied and practiced effective procedures and techniques, along with nutritional supplements, that balance the sympathetic and parasympathetic nervous systems.
From https://drmichaelroth.wordpress.com/2011/08/03/parasympathetic-nervous-system-dominance/
