Slapping the top of the head too hard may cause scalp trauma, and even cause concussion, intracranial hemorrhage and other conditions. 1. Scalp trauma: violent patting on the top of the head may lead to scalp contusion, causing pain and bleeding. 2. Concussion: If you hit the top of the head vigorously, it may cause the body’s nerves, especially the brain, to suffer a certain degree of shock. If the force is too strong, it will cause concussion and memory loss, and may even induce abnormal metabolism of brain nerve cells and epilepsy. 3. Intracranial hemorrhage: If the strength of beating the top of the head is too great, it may cause the intracranial capillary rupture or even hemorrhage, which may lead to the emergence of intracranial hematoma, and then headache, nausea, vomiting, coma and other serious symptoms. If the rescue is not timely, it can also be life-threatening. If the patient is not feeling well, it is recommended to consult a doctor in time to identify the cause of the disease and standardize the treatment, so as not to delay the condition.