Autonomic Nervous System Disorders: Symptoms and Solutions - Psychiatry

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Autonomic Nervous System


Hello, doctor.
Last year, after receiving the second dose of the vaccine, I experienced some discomfort on-site (increased heart rate, difficulty breathing, and felt like I was about to faint).
The nursing staff mentioned that it might be due to sympathetic nervous system stimulation.
I initially thought it was an isolated incident, but it has occurred about two more times intermittently (though I never actually fainted, I just felt unwell).
After more than six months of observation, I gradually realized that it seems to be related to anxiety and panic.
Sometimes I feel inexplicably tense, unable to sit still, and need to take deep breaths to calm myself down.
I visited a psychiatrist once, and the doctor noted a mild condition but felt that I could gradually adjust on my own without being prescribed medication.
Later, in mid-July, I tested positive for COVID-19 and discovered that I started experiencing bloating after every meal, to the point of feeling nauseous (dry heaving).
Sometimes, when the feeling of tension arises, I feel the urge to use the restroom, and panic attacks occur intermittently.
I began taking traditional Chinese medicine for adjustment, but there hasn't been much change.
I often feel nerve tension, and recently I've noticed a sensation of something stuck near my throat or trachea.
Given all these symptoms, could it be that I have autonomic nervous system dysfunction?

Chen Jia-Jia, 30~39 year old female. Ask Date: 2022/09/13

Dr. Tang Jiahong reply Psychiatry


Hello, the anxiety and panic described above are symptoms of anxiety disorders; autonomic nervous system dysfunction is also a common accompanying symptom of anxiety disorders.
Symptoms such as increased heart rate and bloating (which may be due to slowed gastrointestinal motility) can indicate sympathetic nervous system hyperactivity, which falls under autonomic nervous system dysfunction.
However, it is essential to first conduct an internal medicine examination to rule out any underlying medical issues.
If no internal medical problems are found, the focus should be on treating the underlying anxiety disorder.

Reply Date: 2022/09/13

More Info


Based on your description, it seems that you are experiencing a range of symptoms that could indeed be associated with autonomic nervous system (ANS) disorders, particularly in the context of anxiety and panic. The autonomic nervous system is responsible for regulating involuntary bodily functions, including heart rate, digestion, respiratory rate, and more. It consists of two main branches: the sympathetic nervous system, which prepares the body for 'fight or flight' responses, and the parasympathetic nervous system, which promotes 'rest and digest' activities.

Your symptoms, such as increased heart rate, difficulty breathing, feelings of faintness, and gastrointestinal issues like bloating and nausea, can all be manifestations of an overactive sympathetic nervous system, often triggered by anxiety or panic attacks. The fact that these symptoms have occurred intermittently since your vaccination suggests that your body may have developed a heightened sensitivity to stressors, leading to these autonomic responses.

Anxiety and panic disorders can indeed lead to a variety of physical symptoms, including those affecting the gastrointestinal system. The connection between the brain and gut is well-established, often referred to as the "gut-brain axis." Stress and anxiety can lead to increased gastrointestinal motility, resulting in symptoms like bloating, discomfort, and even nausea. Additionally, the sensation of an "object" in the throat or a feeling of tightness in the chest can also be linked to anxiety, often described as a lump in the throat or globus sensation.

To address your concerns about whether you have an autonomic nervous system disorder, it is essential to consider a few key points:
1. Comprehensive Evaluation: It may be beneficial to undergo a thorough evaluation by a healthcare professional who specializes in autonomic disorders or a neurologist. They can conduct tests to assess your autonomic function, including heart rate variability and blood pressure responses to various stimuli.

2. Psychological Support: Since anxiety seems to be a significant factor in your symptoms, working with a mental health professional could be beneficial. Cognitive-behavioral therapy (CBT) is particularly effective for anxiety and panic disorders, helping individuals develop coping strategies and reduce the frequency and intensity of panic attacks.

3. Lifestyle Modifications: Incorporating stress-reduction techniques such as mindfulness, meditation, yoga, or regular physical activity can help regulate the autonomic nervous system. These practices can promote relaxation and reduce the sympathetic nervous system's overactivity.

4. Dietary Considerations: Given your gastrointestinal symptoms, it may be helpful to evaluate your diet. Keeping a food diary to identify any potential triggers for bloating or discomfort can be useful. Additionally, consulting with a nutritionist may provide insights into dietary adjustments that could alleviate your symptoms.

5. Medication: While your doctor has suggested that you may not need medication, if your symptoms significantly interfere with your daily life, discussing pharmacological options with a psychiatrist or primary care physician may be warranted. Medications such as selective serotonin reuptake inhibitors (SSRIs) or benzodiazepines can be effective in managing anxiety symptoms.

In conclusion, while your symptoms may suggest an autonomic nervous system disorder, they are also closely tied to anxiety and stress responses. A multidisciplinary approach involving medical evaluation, psychological support, lifestyle changes, and possibly dietary adjustments can help you manage your symptoms effectively. It is essential to communicate openly with your healthcare providers about your experiences and work collaboratively to find the best solutions for your situation.

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