There are several possible reasons for dizziness in the afternoon: 1. The patient’s work may be more intense and stressful, resulting in the patient’s brain being in a state of fatigue, which causes brain nerve dysfunction. At this time, it is recommended that the patient take a lunch break at noon to ensure that noon sleep and rest, the patient’s symptoms can be alleviated. 2, if the symptoms of dizziness occur in the afternoon in middle-aged and elderly people, consider the relationship with blood pressure fluctuations, can be clarified by measuring blood pressure. If it is indeed caused by elevated blood pressure, the patient should take antihypertensive drugs to stabilize blood pressure and relieve the symptoms. 3. Patients who become dizzy in the afternoon may have insufficient cerebral blood supply, blood in a high-fat, hypercoagulable state, cerebrovascular stenosis and other causes. Patients who show symptoms of dizziness and dullness in the afternoon can have a transcranial Doppler examination to clarify their condition.