Transient dizziness often occurs in the head: 1. It is considered to be an episode of posterior circulation ischemia, which generally refers to ischemia of both vertebral or basilar arteries on the basis of vascular stenosis, and the patient can have symptoms of posterior circulation ischemia. The patient can show transient, episodic dizziness, accompanied by symptoms of transient neurological deficits such as speech dumbness and limb numbness, and the symptoms do not last more than one hour. It is recommended that the patient actively control blood pressure, blood sugar and other cerebrovascular risk factors, and also take oral anti-platelet aggregation and blood-stasis activating drugs. 2. Transient vertigo can also be seen in some elderly people due to poor vascular elasticity of arteriosclerosis as people grow older, resulting in slower blood flow. The patient’s brain cells are in the process of chronic lack of oxygen, and transient vertigo can occur frequently, which usually lasts only one to two seconds and then returns to normal. For elderly people with these symptoms, it is recommended to move slowly and, if necessary, to take oral anti-atherosclerotic drugs to improve circulation.