Dizziness and dullness belong to a very common symptom with many causes: 1. Many people may have such experiences, when lack of sleep, staying up late or emotional tension, anxiety, can easily lead to dizziness, dullness and lack of concentration. 2. Consider that it is caused by insufficient blood supply to the brain, when the patient’s brain tissue is in a state of chronic ischemia and hypoxia, it will lead to dizziness and dullness. When the patient’s brain tissue is in a state of chronic ischemia and hypoxia, it can lead to dizziness and dullness. In case of acute attack of cerebral insufficiency, the patient’s dizziness will be aggravated and may be accompanied by nausea and vomiting. 3, the patient’s dizziness and dizziness may also be caused by cold, fever and other diseases, which should be clarified by combining the patient’s accompanying symptoms and relevant examinations.