Neurosurgery encounters not a few patients with headaches, but many headaches are chronic and symptoms can usually be controlled with oral analgesics, but one of the many diseases in neurosurgery that hides a fatal headache is subarachnoid hemorrhage caused by a ruptured aneurysm. Why does subarachnoid hemorrhage cause a fatal headache? It has a lot to do with the cause of its development. Because the subarachnoid space is a potential cavity between the meninges and the dura mater, if the hemorrhage collects in this cavity, the blood and the products of blood decomposition will cause strong irritation to the meninges, and in addition, the increased intracranial pressure caused by the hemorrhage will further aggravate the headache. -the most painful pain ever experienced in a lifetime. Therefore, not only is the pain unbearable, but the disease is also fatal. It is fatal because its longest cause is aneurysm, because it is an arterial hemorrhage, and once it ruptures and bleeds, the bleeding is so violent that many people have stopped breathing when they are not brought to the hospital. What is an aneurysm again? A simple analogy is that if the blood vessels in the human body are compared to a section of a car tire, there is a part of the tire that is particularly thin and has formed a bulge. If this bulge ruptures, the blood inside will definitely fill the subarachnoid space under pressure, which means that the air of the tire will definitely leak out. Since we know the cause of the hemorrhage, we must actively look for the cause of the subarachnoid hemorrhage in the treatment, and since it is a vascular lesion, the definitive test to determine the cause must be angiography. Angiography not only clarifies the location and size of the lesion, but also provides the basis for subsequent treatment. However, as long as the cranial aneurysm is not treated, the patient’s life will be in danger at any time, just like a time bomb in the head at any time. After the cause of the aneurysm is clearly identified, there are two types of treatment, one is interventional, and the principle of intervention is the same as the analogy mentioned earlier, our role is to patch the tire, that is, to patch the ruptured blood vessel. This approach is relatively non-invasive. The other way is to find out the ruptured blood vessel by opening the skull and clamping the rupture. After the surgery, many people will ask if it will recur after the treatment. It is still the same analogy as before. After repairing a ruptured tire, it is not the original one after all, so there is definitely a certain recurrence rate, but the recurrence rate of intervention is a little higher than that of craniotomy. Therefore, cerebral angiography should be reviewed regularly after surgery. Therefore, the fatal headache caused by neurosurgery should be taken seriously by Gouda.