Dizziness is usually treated with neurology, and there are many tests that need to be done. First of all, you need to do a cranial aspect to exclude intracranial lesions, you can do a cranial magnetic resonance examination, to see if there is a brainstem and cerebellar lesions. Secondly, magnetic resonance angiography is needed to see if there is stenosis or sclerosis of the vertebral basilar artery with an abnormal alignment, and carotid artery and also carotid vascular ultrasound is needed to see if there is subclavian artery blood theft. Then, there are some peripheral vestibular dysfunction may also cause dizziness, which is often more obvious, manifested by the rotation of vision, a sense of rotation, you can go to neurology or otorhinolaryngology, and do vestibular function testing.