What causes sudden dizziness and vertigo?

Generally, sudden dizziness may be caused by unhealthy lifestyle habits, excessive heat, glaucoma, cervical spondylosis, hypertension, or other reasons. When the above conditions occur, it is recommended to seek timely medical treatment. Specific analysis is as follows:

1. Unhealthy lifestyle habits

Long-term sleep deprivation, overexertion, irregular diet, and lack of physical activity can lead to decreased bodily functions, impairing blood circulation and nervous system regulation, thereby triggering sudden dizziness. It's important to improve daily habits and ensure adequate sleep and rest.

2. Excessive heat

In high-temperature environments, the body cools itself through sweating, which may lead to excessive fluid loss, dehydration, slowed blood circulation, and insufficient blood supply to the brain, resulting in dizziness. It's advisable to avoid prolonged exposure to high temperatures in daily life.

3. Glaucoma

Glaucoma is caused by impaired drainage, overproduction, or imbalance in aqueous humor circulation within the eye. This leads to increased intraocular pressure, which compresses blood vessels and nerves around the eyeball, disrupting ocular blood flow and nerve conduction, causing sudden dizziness. Symptoms may include eye discomfort and blurred vision. Patients should follow medical advice to use medications such as carteolol hydrochloride eye drops, latanoprost eye drops, and acetazolamide tablets.

4. Cervical spondylosis

Cervical spondylosis results from degeneration of cervical intervertebral discs or poor posture. It may compress cervical nerve roots or the vertebral artery, affecting blood supply to the brain and nerve signal transmission, leading to dizziness. Additional symptoms may include neck pain and stiffness. Treatment under medical guidance may include cervical rehabilitation granules, ibuprofen sustained-release capsules, and mecobalamin tablets.

5. Hypertension

Hypertension can be caused by various factors, such as long-term high-salt diet and sleep deprivation. Elevated blood pressure places excessive strain on blood vessel walls, potentially damaging vascular integrity and cardiac function, and impairing cerebral blood flow, thus causing dizziness. Symptoms may also include headache, palpitations, and chest tightness. Medications such as nifedipine controlled-release tablets, valsartan capsules, and losartan potassium-hydrochlorothiazide tablets should be taken as prescribed.

To prevent sudden dizziness, it's important to maintain a regular lifestyle, including sufficient sleep, balanced nutrition, moderate exercise, and avoiding prolonged exposure to extreme environments or poor postures.