Why do I feel nauseous and want to vomit whenever I think of something upsetting, and what should I do about it?
Generally, feeling nauseous or having an urge to vomit when thinking of unpleasant events may be related to excessive mental stress, psychological reflexes, irritable bowel syndrome (IBS), gastritis, or cardiac neurosis. Symptomatic management through general measures and medication is usually required. If discomfort occurs, it is advisable to seek medical attention promptly and receive appropriate treatment under a doctor's guidance. Specific analyses are as follows:

1. Excessive Mental Stress: Prolonged exposure to high levels of psychological stress can trigger the body's stress response, including the release of adrenaline and cortisol. These chemicals may disrupt normal gastrointestinal function, leading to feelings of nausea and vomiting. It is recommended to relieve stress through activities such as listening to music, talking with others, or jogging.
2. Psychological Reflex: Sometimes, the brain may produce strong reactions to emotional stimuli, manifesting as physical symptoms like nausea and vomiting. This may occur due to neural connections between certain areas of the brain and the digestive system, where emotional changes can influence the activity of these neural pathways. Symptoms can generally be alleviated through deep breathing exercises.
3. Irritable Bowel Syndrome (IBS): Poor mood can exacerbate IBS symptoms and affect gastrointestinal motility, potentially causing abdominal pain, nausea, and changes in bowel habits. It is recommended to use medications such as mebeverine hydrochloride tablets or alverine citrate capsules under medical supervision to regulate intestinal smooth muscle function.
4. Gastritis: Gastritis refers to inflammation of the gastric mucosa, commonly presenting symptoms such as nausea, vomiting, and stomach discomfort. Emotional fluctuations can affect the nervous system and thereby impair normal gastric function. Psychological distress from unpleasant experiences may worsen gastritis symptoms. It is advised to follow medical instructions and use acid-suppressing medications such as bismuth potassium citrate tablets or colloidal pectinum bismuth capsules for relief.
5. Cardiac Neurosis: Cardiac neurosis is a condition characterized by dysfunction of the heart's nervous system, often causing chest discomfort, palpitations, and nausea. Emotional fluctuations, anxiety, and stress may trigger episodes of cardiac neurosis, resulting in nausea when facing unpleasant situations. Under medical guidance, medications such as alprazolam tablets or metoprolol tartrate tablets may be used to reduce anxiety and slow heart rate.
In daily life, it is recommended to practice relaxation techniques, communicate regularly with family and friends to express emotions and release inner stress, thus improving adverse physical and psychological responses. Additionally, maintaining a balanced diet is beneficial for overall health.