Fighting dizziness can be identified. There are many reasons for dizziness after a fight, which can be caused by concussion, or even cerebral hemorrhage or high blood pressure, etc. It can be identified by symptoms such as headache, positive neurological signs, CT and other auxiliary examinations. 1. Concussion: Concussion is the most common cause of dizziness after a fight, and is usually accompanied by other symptoms, such as a severe headache. Concussions are generally characterized by no obvious abnormalities on CT and MRI, and can present with transient coma, retrograde amnesia, and symptoms such as headache, nausea, and vomiting. 2. Intracranial hemorrhage: Early symptoms of intracranial hemorrhage may not be obvious, and some patients only show dizziness, and in the later stage, they may have projectile vomiting, and even changes in mental status, such as lethargy, light coma, deep coma, and so on. The acute stage of cerebral hemorrhage is characterized by high density shadow on CT. 3. Hypertension: Older people or patients with a history of hypertension may experience dizziness after a fight due to fluctuations in blood pressure. At this time, blood pressure can be measured to clarify the diagnosis. If the symptoms are more serious, it is recommended that the patient go to a regular hospital in time, under the diagnosis of the doctor, according to the patient’s specific condition, to take targeted treatment.