What's with the confusion, the nausea?

Causes of nausea and vomiting: I. The patient smokes and drinks for a long time, and does not maintain good living habits; II. Poor work and rest habits, often staying up late or overnight leading to insufficient sleep, and overworked body cannot get sufficient rest; III. Personal hygiene is not clean and tidy; IV. Mental stress is too high; V. Weight loss leads to severe malnutrition; VI. The patient has a history of hypoglycemia; VII. Confusion, nausea and vomiting may be precursors of cervical spondylosis; 8. Patients with cerebral ischemia and hypoxia may also experience nausea and vomiting due to insufficient cerebral blood supply; 9. Some foods damage the gastrointestinal mucosa of patients; 10. Nausea and vomiting in women may be early pregnancy reactions that occur after pregnancy.