There is no uniform clinical time frame for how long a fall to the back of the head can be determined to be okay. After a fall to the back of the head, the time to onset or fade of symptoms varies for patients depending on different factors such as the degree of the fall injury and physical fitness. Patients who are weaker and have more serious fall injuries need to pay close attention to whether they have abnormal symptoms such as dizziness, slurred speech, and impaired consciousness within 2 hours after the fall. There are central nerves and blood vessels in the back of the head, which may cause blood vessels to rupture after a fall, thus inducing cerebral hemorrhage, but depending on the degree of the fall and the severity of the cerebral blood vessel rupture, the amount and time of bleeding may vary. Patients with minor fall injuries and slight rupture of blood vessels may have the disease start in 1 week or longer, so it is recommended that patients go to the hospital for CT brain examination as soon as possible to clearly diagnose whether there is brain hemorrhage. Patients with hemorrhage in the back of the head may have various symptoms such as nausea and vomiting, low mental status, reduced attention span, blurred vision, distorted mouth, and sensory-motor impairment, etc. Patients should focus on observing changes in their condition after the fall and should seek immediate medical attention if they have any of these symptoms of unknown origin. In addition, patients with hemophilia, leukemia, diffuse intravascular coagulation and other bleeding disorders, as well as those taking long-term anticoagulant drugs such as aspirin and dipyridamole, are more likely to have blood vessel rupture after a fall on the back of the head, so patients should pay more attention to their own situation and go to the hospital immediately after discomfort.