What causes dizziness and nausea when focusing on something, and what should be done about it?

Dizziness and nausea when focusing on objects may be caused by physiological factors, or by pathological conditions such as hypertension or insufficient cerebral blood supply. Treatment can be achieved through general management or medication. Specific details are as follows:

I. Physiological Factors

Prolonged use of mobile phones may lead to visual fatigue or abnormal intraocular pressure, such as refractive errors, resulting in dizziness and nausea. It is important to get adequate rest and avoid excessive eye strain.

II. Pathological Factors

1. Hypertension

Hypertension can increase cerebral blood volume, disrupt cerebral blood flow balance, indirectly affect ocular nerves, cause eye muscle movement disorders, and lead to dizziness when focusing the eyes. Medications such as furosemide tablets or metoprolol tartrate tablets may be used under medical guidance.

2. Insufficient Cerebral Blood Supply

This is usually due to reduced cerebral blood flow, leading to ischemia and hypoxia in brain tissue and varying degrees of damage, which may result in symptoms such as nausea and vomiting. Medications such as flunarizine hydrochloride capsules or betahistine hydrochloride tablets may be taken under a doctor's supervision.

In addition to the above causes, dizziness and nausea may also result from cerebral hypoxia, cerebral hemorrhage, or cerebral infarction. It is important to maintain a positive mindset and avoid emotional excitement.