Why does low cranial pressure syndrome cause headaches?

The nature of low cranial pressure headache is mainly mild to moderate dull or throbbing pain, often accompanied by nausea, vomiting, tinnitus, and blurred vision.
First, it is related to body position. In upright position, the traction of sensory nerve and bridging vein is increased, and the pain is intensified after pulling.
Second, it is related to venous diastole. 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 the volume and volume of cerebrospinal fluid. When trauma or operations such as lumbar anesthesia cause loss of cerebrospinal fluid, there is often a manifestation of increased headache.

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