What causes sudden dizziness and nausea?
Disease description:
I usually don't have any physical discomfort, but occasionally experience dizziness and nausea. May I ask what could be causing this?
Doctor's answer (1)
Dr. Lv Zhiqin
Dizziness and nausea are common symptoms that can be caused by various factors. Dizziness may manifest as vertigo, a sense of imbalance, or a feeling of impending fainting, while nausea refers to an uncomfortable sensation in the stomach, often accompanied by an urge to vomit. These symptoms can be transient or persistent, and some common causes include:
1. Peripheral causes: These are usually related to vestibular dysfunction, such as otolith disorders. Detachment of otoliths may cause sudden dizziness, nausea, and vomiting. In addition, vestibular neuritis and Ménière's disease also can cause these symptoms.
2. Cardiogenic factors: Circulatory ischemia or heart problems, such as sudden arrhythmia or premature beats, may lead to cerebral ischemia, resulting in symptoms of dizziness, nausea, and vomiting.
3. Anxiety or stress: Psychological factors can sometimes cause physical discomfort.
4. Hypotension: When blood pressure drops suddenly, the brain may not receive sufficient blood supply, causing dizziness.
5. Dehydration: Insufficient water intake can affect blood circulation, triggering dizziness and nausea.
6. Medication side effects: Certain medications may cause dizziness or nausea.
