Dizziness is a very common symptom and a very subjective symptom. Dizziness can be divided into dizziness, vertigo, imbalance and ocular dizziness, etc. There are many departments involved. First, what is dizziness: dizziness is a feeling of heaviness, a sense of floating of the head or body, or a sense of floating. It may be physiological, such as work exhaustion, lack of sleep, nervousness, etc. will have a sense of dizziness, these can be adjusted to improve. Pathological dizziness may be caused by hypertension, insufficient cardiac output, upright hypotension, drugs, viral diseases, insufficient blood volume, vascular and vagus nerve abnormalities, etc. What is vertigo: Vertigo is a sensation of moving or turning of the body or space, which we generally call “spinning”. General diagnoses related to vertigo include benign postural vertigo, acute inner ear vaginitis, severe otitis media, temporary ischemia of vertebrobasilar artery, stroke, etc. Dizziness is mostly a symptom of vertigo, which is divided into the following two types: 1. True vertigo is caused by eye, proprioceptive or vestibular system diseases, with obvious sensation of external objects or self rotation. 2. Pseudovertigo is mostly caused by systemic diseases, such as cardiovascular disease, cerebrovascular disease, anemia, uremia, drug poisoning, endocrine disease and neurosis, etc. Almost all of them have symptoms of dizziness of varying severity, and patients feel “floating” without a clear sense of rotation. Common vertigo: 1. Otoliths are most common in clinical practice and are mostly seen in otorhinolaryngology. It starts suddenly with persistent vertigo, which is relieved after a few days and turns into episodic vertigo. However, vertigo occurs when the head is in a certain position and can last for tens of seconds, and it can be reduced or disappeared when the head is turned or reversed. The duration of vertigo varies greatly, and most of them resolve themselves or disappear within a few hours or days after the onset. 2.Ménière’s disease Clinical manifestations are intermittent recurrent attacks of vertigo, with intervals ranging from days, months to years. The vertigo is often sudden, starts with the most severe degree, intensifies with head movement and eye opening, and is mostly accompanied by tilting, a state of panic due to the feeling of intense rotation and movement, accompanied by tinnitus, deafness, nausea, vomiting, pallor, slow pulse, drop in blood pressure and nystagmus. The duration of each attack varies from a few minutes to several hours, with some attacks lasting for several days. After each episode, fatigue and sleepiness are present. Balance and hearing return to normal during the interval. After several attacks, the vertigo decreases as the deafness on the affected side increases, and disappears when the deafness progresses to complete deafness. 3. Ischemic lesions of the VBA system of the vertebral basilar artery with nystagmus without other signs and symptoms of the nervous system. (1) Transient ischemic attacks are indefinite and can occur several times in a day or once in several days, and usually resolve or disappear in a few minutes to half an hour. In mild cases, there is only vertigo and instability, while in severe cases, frequent attacks progress to complete vagal stroke. (2) The vertigo, tinnitus, and deafness continue to progress and worsen after the onset of progressive stroke, reaching a peak after a few days. (3) Vertigo, instability, tinnitus, and deafness peak a few hours after the onset of complete stroke, with marked nystagmus. The symptoms may gradually decrease after a few weeks. Dizziness with hearing impairment is often present. (4) There are other lesions that can also cause vertigo, all of which belong to the category of vertigo, such as: cerebellar hemorrhage, neck lesions, intracranial tumors, craniocerebral trauma, drug or poison poisoning, inflammatory demyelinating diseases, etc. V. Where to go for different types of dizziness: Most of the dizziness does not need too much worry, but if there are repeated attacks, it is necessary to consult a doctor in time to exclude some serious diseases, except for malignant vertigo caused by cardiovascular and cerebrovascular diseases in the highest priority. 1. Otolaryngology If you have chronic recurrent dizziness with ear symptoms, such as tinnitus and hearing problems, you can consult the otolaryngology department. 2. Neurology If chronic recurrent episodes of dizziness are accompanied by headache, consult a neurologist. If an elderly person has recurrent episodes of dizziness with risk factors for atherosclerosis, such as hypertension, diabetes, and hyperlipidemia, it is also recommended to consult a neurologist as a matter of priority. What to do when dizziness strikes: 1. When dizziness strikes, the first thing to do is to put down what you are doing. 2, during the attack period, it is best to rest flat on your back to prevent injury from falling when standing, and to reduce head rotation. 3, next to a blood pressure meter is best to measure blood pressure and heart rate. 4, if the symptoms are mild or remission attention to observation, if the attack is frequent or heavy symptoms promptly seek medical attention.