Is dizziness, nausea and vomiting serious

The doctor replied:

there are many reasons for nausea and vomiting. Sometimes meningitis and encephalitis can cause nausea and vomiting or dizziness, cerebrovascular diseases, which can also cause such symptoms. At the same time, viral colds can also cause this situation, and some digestive system diseases can also cause this symptom, so the severity of symptoms is different for different causes, The consequences are different.