If the bruising in the brain is a small amount of bruising, there will be no serious consequences, and the patient will have no sequelae after the bruising is absorbed when the patient rests in bed. If the bruising in the brain is more, it will produce compression symptoms, which will compress the surrounding brain tissue. If the compression is not released, it can cause swelling and necrosis of the surrounding brain tissue, and in severe cases, it can lead to neurological deficits. If the cerebral edema is severe, the patient can develop brain herniation, which can lead to sudden failure of respiratory and cardiac circulation functions of the medulla oblongata or cardiac arrest, and the patient’s life can be in danger. Cerebral bruising can cause coma, which can lead to vomiting or aspiration, which can also be life-threatening.