1, psychogenic: Some people will faint for no reason because of nervousness, poor sleep and emotional factors. This kind of dizziness is not very severe, usually it will recover on its own after a while, but sometimes it will last most of the day.

2. Benign paroxysmal head vertigo: The patient has poor tolerance to exercise, especially neck exercise. Slight head movements, such as starting the car slightly, or braking suddenly, or turning, will cause dizziness, which will pass in a few seconds. These people are more likely to get excited when their inner ears get lost. Usually it is better to do more gymnastics and light exercise to train.

3. Mesnier's disease: Patients often feel dizzy for several hours to more than one day, accompanied by tinnitus, hearing loss and nystagmus. Its pathological change is "endolymphatic hydrops" in the inner ear, but the real mechanism is still unclear. Many doctors attribute all dizziness to this disease. In fact, its diagnosis needs hearing examination and long-term medical history observation.

4. Vertebrobasilar insufficiency: Most of the blood supplied to the inner ear and cerebellum comes from vertebrobasilar artery. The dizziness of the elderly is due to arteriosclerosis or bone spurs on the cervical spine, which leads to insufficient blood supply.

5, systemic diseases: patients with hypertension, diabetes, asthma, often dizzy; Sometimes patients who take antihypertensive drugs or hypoglycemic drugs, due to overdose, cause hypotension or blood sugar reduction, and also cause dizziness.

6. Ear syphilis: There are many patients with dizziness. Although there are no obvious symptoms of syphilis, the test results show that syphilis serum is positive. This disease refers to syphilis entering the inner ear, causing dizziness, hearing loss and tinnitus.

7. Complications of chronic otitis media: Patients with chronic otitis media, especially those complicated with cholesteatoma, sometimes suffer from semicircular canal damage, which leads to dizziness due to "out-of-control". Therefore, we should actively treat chronic otitis media to avoid complications.

8. Brain tumor and brain injury: The common tumor is acoustic neuroma growing between cerebellums, and patients may have unilateral hearing impairment, headache and dizziness. In addition, patients with brain injury caused by stroke or car accident will also feel dizzy.

9, vestibular neuritis: often soon after catching a cold, suddenly dizzy and vomiting. The patient's hearing is normal and his mind is clear, but he is dizzy and his nystagmus is serious, so he dare not move in bed. This kind of dizziness usually lasts about ten days, and then returns to normal.

In a word, dizziness is just a symptom, which can be caused by many reasons, which may be a "minor illness", even a physiological factor, or a manifestation of a serious disease. Therefore, patients should not take it lightly. They must describe the medical history and the specific process of the attack to the doctor in detail, and they must also undergo a series of tests to find out the cause of dizziness. These examinations include blood and urine examination, fundus examination, cervical radiography, electrocardiogram, audiometry, vestibular function examination, echocardiography, cerebrospinal fluid examination and cerebrovascular examination, skull CT, magnetic resonance examination and so on. Of course, the above examination items must be selected under the guidance of a doctor as needed.

Director Cao of Zhengzhou Garrison Hospital reminded: Don't buy medicine at will before finding out the cause, so as not to delay the illness. Only by targeted treatment for the cause can we get twice the result with half the effort.