CSF is continuously dripping from the nostrils. On the one hand, the original cerebrospinal fluid in the brain will decrease and the intracranial pressure will drop. The patient will feel dizzy, nausea, and vomiting. On the other hand, as the cerebrospinal fluid continues to drip outward, the outside air will enter the skull and be gradually filled with air, the intracranial pressure will gradually increase, and in severe cases it will squeeze the brain tissue, which is called “brain hernia “, Will be immediately life-threatening. If cerebrospinal fluid rhinorrhea is not treated in time, what will happen? Cerebrospinal fluid rhinorrhea, if not treated in time, will cause abnormal changes in intracranial pressure. In addition, the brain is originally a sterile environment. After the leak is connected to the outside world, bacteria will take the opportunity to enter and cause intracranial infection. Mild infections can cause dizziness, headache, and fever; severe intracranial infections can develop into meningitis, and in the worst cases, death. What are the behaviors of patients with cerebrospinal fluid rhinorrhea that are likely to cause intracranial infection? The patient’s behavior itself will not aggravate the intracranial infection, but it will cause the leak to expand and indirectly aggravate the intracranial infection. For example, holding your breath during constipation, blowing your nose, or suddenly sneezing when you smell pepper or pollen. Especially for patients with spontaneous cerebrospinal fluid rhinorrhea, their skull base itself is relatively weak. If you do not pay attention in daily life, such as moving heavy objects, tug-of-war, etc., if the force is too strong and the breath holding is too long, the leak will be enlarged. What are the possible symptoms of intracranial infection? If patients with cerebrospinal fluid rhinorrhea have the following three phenomena, they must be careful about intracranial infection: 1. Fever, body temperature exceeding 37.5 ℃; 2. Headache; If these three phenomena occur, it is necessary to quickly find a doctor to check whether an intracranial infection has actually occurred. To confirm whether there is an intracranial infection, first look at whether the nose is dripping water. Secondly, test the dripping liquid and check the sugar and protein components inside. In addition, you can also do brain imaging examination, often by MRI. Can determine the location of the leak.