Well, this is when the brain sags and dangles on tense nerves. This is said to be due to bony spines that pierce the meninges and cause cerebrospinal fluid to leak.
I am not kidding. Our brain does not just lie in the cranium, but floats there, being immersed in a special fluid.
If in the air the brain weighs about one and a half kilograms, then in a state immersed in the cerebrospinal fluid - only 50 grams. He flounces there like a baby in the womb.
The cherished liquid washes our brain for a reason, but under a certain pressure. This whole structure captures not only our head, but also the spinal cord. That is, the liquid circulates in a cunning way from the head to the lower back, somewhere it is produced, and somewhere it is absorbed, and this whole system is in balance.
Somewhere in the back, cerebrospinal fluid leaks sometimes occur. This was noticed when, at the end of the nineteenth century, they learned to do a lumbar puncture.
Then a needle was stuck into the lower back of the people, the dura mater was pierced, and from there, spinal fluid dripped, and sometimes even trickled out.
At first, the doctors were happy to receive the liquid for analysis, but very soon they were upset because the subjects had a terrible headache.
The headache began in the upright position of the body.
It became clear that draining the liquid could trigger a headache. It is believed that when the pressure of the cerebrospinal fluid drops, then our brain really sags and clumps to the bottom of the skull.
If the brain dangled there like a float, it might have cost, but different nerves, blood vessels and membranes are attached to our brain on all sides. The brain hangs on them like a New Year's ball on a Christmas tree, and the nerves and blood vessels hurt from this.
Some people think that the head hurts not from the tension of the nerves, but from the tension of the veins. Something in the sense that the veins expand and try to fill the void in the head. Well, the dilated blood vessels in the head can hurt by themselves. Everyone has heard about it.
When cerebrospinal fluid flowed out through a needle or after a person fell out of a window, or when a bus ran into his back, this was understandable. But sometimes something similar happened even for no reason. The scientists pondered.
Ultimately, it was agreed that there could be many reasons for the drop in cerebrospinal fluid pressure.
Sometimes it's because of the weakness of the connective tissue. Everyone knows that this can be a hernia or varicose veins, but few people realize that about the same hernia happens in the dura mater. That is, the shell ceases to be solid and does not hold pressure. The pressure drops and a headache begins.
And there is also such an idea that if you physically work out something intensively enough, you can injure your dura mater somewhere in your back. It may even be a matter of hard spines that grow on the vertebrae with age.
Some such an aged person sometimes gets hit in the ribs by a demon. After that, a person begins to do something very intensely physically and steamed the dura mater with his own bones in the back.
Then, for some time, cerebrospinal fluid leaks from this hole, and the fluid pressure drops not only in the back, but also around the brain. The poor fellow's brain sags and a headache begins.
The head will hurt when moving from a horizontal position to a vertical one. Therefore, you need to lie on a strict bed rest. If this approach helps, then the victim will need to take breaks from work every hour for a long time and lie down for five minutes. Otherwise it will hurt again.
And caffeine also contributes to the fastest recovery of pressure. Coffee in bed or even just cola soda. Fun mode.
To clarify, this is not about an increase in blood pressure due to coffee, but about an increase in the pressure of cerebrospinal fluid in the head. This effect is not entirely clear, but it is there.
Have you heard about this?