The nature of low cranial pressure headaches is mainly mild to moderate dull or throbbing pain, often accompanied by nausea, vomiting, tinnitus and blurred vision.
Firstly, it is related to body position. In the upright position, there is increased traction on the sensory nerves and bridging veins, and the pain is exacerbated by the pull.
Secondly, it is related to venous dilation. Since jugular vein compression increases the severity of the headache, venous diastole is a contributing factor to the headache.
It is also believed that the headache of hypocranial pressure syndrome is related to a decrease in cerebrospinal fluid volume and volume. When trauma or operations such as lumbar anaesthesia cause a loss of cerebrospinal fluid, the headache often manifests itself as an increased headache.