The causes of dizziness and nausea are mainly the following: 1. Vertigo. Including otoliths, otitis media, Meniere’s syndrome, etc. The common clinical symptoms include dizziness, aggravated by activity, accompanied by nausea and vomiting, etc. 2, cerebral infarction. It is a common cerebrovascular disease, clinical symptoms are related to the site of infarction, common clinical symptoms are dizziness, headache, limb numbness, limb movement disorders, salivation at the corners of the mouth, etc., because the acute stage of cerebrovascular disease is better treated, it is best to check the hospital cranial nuclear magnetic to confirm the diagnosis. 3, carbon monoxide poisoning. If there is a coal stove in the house and symptoms of dizziness and nausea appear, it may be caused by carbon monoxide poisoning, you can go outside to breathe fresh air and observe for a while, there are more causes of dizziness and nausea, it is best to go to the hospital for further examination to confirm the diagnosis.