The hospital tests say nothing is wrong, yet your body feels so distressed that you feel like you might die—that experience was truly painful, wasn't it? Modern medicine diagnoses these symptoms as 'hyperventilation syndrome.' Literally, it is an umbrella term for symptoms arising from breathing too fast and deep, but it is not merely a respiratory issue. You can understand it as a powerful warning signal sent by your body's 'autonomic nervous system.'
The autonomic nervous system is an essential system that regulates life activities such as making the heart beat, breathing, and digesting without our conscious awareness. This autonomic nervous system is largely divided into the 'sympathetic nerve' and the 'parasympathetic nerve.' The sympathetic nerve places the body in an emergency state when tense or in danger, while the parasympathetic nerve relaxes and restores the body. Hyperventilation syndrome begins when the sympathetic nerve becomes excessively hyperactive due to extreme stress, anxiety, or a panic attack. Reacting as if threatened, the body begins breathing rapidly without realizing it.
When you breathe this quickly and deeply, the concentration of carbon dioxide in the body drops drastically. This carbon dioxide is not merely waste; it plays an important role in regulating the acidity of our body. When its concentration decreases, 'respiratory alkalosis' occurs, where the blood turns alkaline. When the pH of the blood changes, cerebral blood vessels constrict, causing dizziness, and the blood volume reaching the brain also decreases, leaving you feeling cloudy-headed. Additionally, as the balance of calcium ions in the body is disrupted, you may experience numbness in the hands and feet, muscle spasms, and, in severe cases, tetany. Symptoms such as chest tightness, chest constriction, and palpitations are also due to an increased heart rate and tension in the thorax muscles caused by sympathetic hyperactivity.
Because all these symptoms are so real and distressing, patients are seized by an intense fear that they have contracted a truly severe illness. Then, this fear and anxiety stimulate the sympathetic nerve even further, creating a vicious cycle that induces hyperventilation. When the hospital tests show no abnormalities, many people blame themselves, wondering, 'Am I strange?' or 'Is this a psychological problem?', but that is never the case. Your body is displaying an entirely normal physiological response to stress and anxiety. Emotional centers in the brain, such as the amygdala, become hyperactivated and trigger the body's defense system. Accurately understanding this process and listening to your body's signals is the first step toward healing.
