Is It Autonomic Nervous System Disorder? Your Symptoms - Neurology

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Could this be classified as autonomic nervous system dysfunction?


Hello, doctor.
I am 23 years old, with a height of 157 cm and a weight of 65 kg.
(Personal experience: I have had nasal allergies since childhood, but the condition has not been severe as I grew up, experiencing occasional nasal congestion and post-nasal drip.
I have been diagnosed twice.) In high school, I experienced hyperventilation twice, and once in college.
After visiting a cardiologist, I was found to have mitral valve prolapse and sinus arrhythmia.
I am currently in graduate school and recently have been feeling chest tightness and a sensation of not being able to take a full breath, needing to take deep breaths to feel satisfied.
I visited a pulmonologist, but the doctor said there were no issues; only that my intestines appeared slightly distended, suggesting that gas might be pressing on my thoracic cavity.
Later, I went to a cardiologist again, and all tests including ECG, blood tests, and X-rays showed no problems, only noting that my heart rate was a bit elevated but still within normal limits.
Other parameters such as blood pressure, blood sugar, and thyroid function were normal.
The doctor suggested I exercise more, and now I try to engage in physical activities like brisk walking or running whenever I have time.
There have been a few instances when I felt more severe symptoms, such as difficulty breathing, slight dizziness, and numbness in my hands and feet.
Currently, I experience chest tightness and a sensation of inadequate air intake almost daily, but these symptoms are less pronounced when I am focused on tasks, eating, or drinking.
My daily eating, bowel movements, and sleep are normal without any issues.
Occasionally, I experience indigestion, and I have been avoiding caffeinated beverages and foods that may cause gas.
Given that previous examinations of my thoracic cavity and heart showed no issues, could this be a case of autonomic nervous system dysfunction? Thank you for your response, doctor.

J, 20~29 year old female. Ask Date: 2023/07/17

Dr. Cai Zongzhang reply Neurology


Hello J: Based on the symptoms mentioned, it is recommended to visit an otolaryngologist to check if nasal issues are causing difficulty in ventilation.
The symptoms described are not caused by autonomic nervous system disorders, and regular exercise may help improve the condition.

Reply Date: 2023/07/17

More Info


Hello! Thank you for sharing your detailed symptoms and medical history. Based on your description, it seems that you are experiencing a range of symptoms that could indeed be related to autonomic nervous system (ANS) dysfunction, commonly referred to as autonomic dysregulation or dysautonomia.
The autonomic nervous system is responsible for regulating involuntary bodily functions, including heart rate, blood pressure, digestion, and respiratory rate. 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' functions). When there is an imbalance or dysfunction in this system, it can lead to a variety of symptoms, many of which you have described.

Your history of experiencing episodes of hyperventilation, along with the findings of mitral valve prolapse and sinus arrhythmia, suggests that your body may be reacting to stress or anxiety in a way that affects your autonomic regulation. Symptoms such as chest tightness, difficulty breathing, and feelings of dizziness or lightheadedness can often be linked to anxiety and stress, which can exacerbate autonomic dysfunction.

The fact that you feel better when you are focused on activities like eating or drinking indicates that your symptoms may have a psychosomatic component, where your mental state influences your physical sensations. This is not uncommon in individuals who experience anxiety or stress, as the body can react to perceived threats by triggering the sympathetic nervous system, leading to symptoms like those you described.

In terms of your gastrointestinal symptoms, such as bloating and gas, these can also be influenced by the autonomic nervous system. The digestive system is heavily regulated by the parasympathetic nervous system, and any dysregulation can lead to symptoms like bloating, discomfort, and altered bowel habits.

Given that your heart and lung examinations have returned normal results, it may be worthwhile to consider a comprehensive approach to managing your symptoms. Here are some recommendations:
1. Stress Management Techniques: Incorporating relaxation techniques such as mindfulness, meditation, or yoga can help regulate your autonomic nervous system. These practices can promote parasympathetic activity, which may alleviate some of your symptoms.

2. Regular Physical Activity: As you mentioned, engaging in regular exercise can help improve your overall cardiovascular health and may also help in managing anxiety. Aim for a mix of aerobic exercises (like walking or running) and strength training.

3. Dietary Adjustments: Since you have noted some digestive issues, continue to monitor your diet. Avoiding caffeine and gas-producing foods is a good start. Consider keeping a food diary to identify any specific triggers.

4. Hydration and Electrolyte Balance: Ensure you are well-hydrated, as dehydration can exacerbate symptoms of autonomic dysfunction. Electrolyte balance is also crucial, so consider incorporating electrolyte-rich fluids into your diet.

5. Cognitive Behavioral Therapy (CBT): If anxiety is a significant component of your symptoms, working with a mental health professional trained in CBT can help you develop coping strategies and reduce anxiety-related symptoms.

6. Follow-Up with Specialists: If symptoms persist or worsen, consider following up with a neurologist or a specialist in autonomic disorders. They may recommend specific tests to evaluate your autonomic function more thoroughly.

In summary, while your symptoms may indeed suggest autonomic nervous system dysfunction, they can also be influenced by anxiety and stress. A holistic approach that includes lifestyle modifications, stress management, and possibly therapy could be beneficial in managing your symptoms. Always consult with your healthcare provider before making significant changes to your health regimen. Wishing you the best on your journey to better health!

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