Occasional dizziness in the head is called vertigo in Chinese medicine, while in Western medicine, dizziness can be episodic, including the following: first, posterior circulation ischemia, which is commonly known as cerebral insufficiency of blood supply, mostly occurs in middle-aged and elderly people, and patients often have hypertension, diabetes, hyperlipidemia and other underlying diseases, and the onset of dizziness does not correlate with changes in body position; second, the disease to be considered is positional vertigo, which is also known as otoliths. The second disease to be considered is positional vertigo, which is also known as otolithiasis. This kind of dizziness occurs only when the head position is changed, and the duration of dizziness is very short, and it always occurs in a stereotyped way, always in a certain position, but not when the position is changed; thirdly, vestibular paroxysm, where dizziness is recurrent, and the onset of dizziness does not correlate with the position or change of head position; fourthly, cervical vertigo needs to be excluded, and there are various kinds of vertigo in the clinic. It is recommended to go to the hospital to find out the cause and treat the symptoms in a timely manner.