Patient's question:
Patient gender: Female. Why do you feel like vomiting? Suddenly feeling nauseous, not because you don't want to eat, but then feeling waves of nausea after eating? Also, you feel weak, tired, and sleepy. Why is that?Doctor's answer:
Hello:Nausea is an uncomfortable sensation in the abdomen and is often a precursor to vomiting. Vomiting is the forceful expulsion of stomach contents through the mouth.
Nausea and vomiting are triggered by the brain's vomiting center. Expelling harmful substances from the stomach is one of the body's sophisticated protective mechanisms, which occurs after eating, swallowing irritating or toxic substances, or consuming spoiled food.
Some people experience nausea and vomiting due to motion sickness (motion sickness) when traveling by ship, car, or airplane. During pregnancy, especially in the first few weeks, vomiting, even severe vomiting, can occur, particularly in the morning. Many medications, including anticancer drugs (chemotherapy drugs) and opioid pain relievers like morphine, can cause nausea and vomiting. In mechanical intestinal obstruction (see Section 112), food and liquids reflux from the obstruction site and are eventually vomited. Stimulation and inflammation of the stomach, intestines, and bile ducts can also cause vomiting.
Mental health issues can also lead to nausea and vomiting (neurotic vomiting). This can be subjective, such as vomiting to lose weight in anorexia. It can also be non-subjective, serving as a conditioned reflex for a specific purpose, such as a student skipping school. Psychological vomiting can also be triggered by fear or an aversive environment that causes anxiety. Sometimes, the psychological factors that cause vomiting depend on a person's cultural background. For example, most Americans find ants wrapped in chocolate repulsive, while people in other parts of the world consider it a delicacy. Vomiting may also be an expression of hostility (a behavior that conveys aversion or anger), such as when a child has a tantrum and vomits. Vomiting may also occur due to