Vertigo syndrome can be diagnosed by symptoms and clinical examination. The common examination items include otologic examination, neurologic examination, imaging and electrophysiologic examination, and other examinations such as blood biochemistry, etc. The specific examination items are as follows: 1. Neurological examination: check the parts related to the vestibular system, visual acuity and fundus examination; 3. Imaging and electrophysiological related examinations: including head CT, CTA, brain MRI, DSA, TCD, ECG, etc.; 4. Laboratory examinations: including routine blood and blood biochemical examinations; 5. Other examinations: such as blood pressure, pulse, blood sugar, etc.