Dizziness itself is a non-specific symptom, which may be expressed differently by different people, with obvious subjective variability, and is often accompanied by other symptoms, which can be roughly divided into the following three feelings: 1. Pre-syncope: dizziness, blurred vision, limb weakness, unstable standing, and in severe cases, blackness in front of the eyes, loss of consciousness, falling to the ground, and pallor. Some patients have nausea, epigastric discomfort, panic, sweating, etc.; 2. vertigo: rotational or up-and-down swaying motion, unstable standing, spontaneous tipping, nausea, vomiting, sweating, pale face, etc., which may be accompanied by tinnitus, hearing loss, ear blockage, etc.; 3. dizziness: head swelling, dizziness, brain fog, unconsciousness, head heavy, brain shaking, unstable walking The dizziness can be accompanied by pallor, insomnia, tinnitus, restlessness, impatience, sleepiness, insomnia, memory loss, lack of concentration, and reduced work efficiency. There are many diseases that cause dizziness, the common ones are febrile diseases, hypertension, cerebral arteriosclerosis, cranial trauma syndrome, epilepsy, Ménière’s disease, vestibular neuritis, anemia, arrhythmia, heart failure, hypotension, drug intoxication, uremia, asthma, etc. In addition, insomnia, emotional stress, anxiety and depression, pain, fear, sultry weather, fatigue, etc. can also cause dizziness and vertigo. If you feel unwell, you should go to the hospital for detailed examination and treatment as soon as possible.