Pain is a natural reaction of the body to irritants that bring discomfort and threaten aggression. Nature endowed pain with every creation. It is thanks to the fact that we can experience pain that we save our body, our body from the destructive effects of the external environment. When we bring our hands to the fire, we pull them back; when we cut our fingers, we also try to get rid of the object that injured the hand. All these actions are natural, since they are aimed at maintaining the integrity of the organism and its normal functioning. The pain that a person encounters has different strengths, so the interesting question is, is there a unit of pain? And if so, what are the limits of the body. After all, there are circumstances that cause pain shock and a person dies - not so much from the nature of the lesion, but from how much the lesion affected the body. Pain is not only a local reaction, it is primarily a response of the leading systems - cardiovascular, nervous, hormonal, respiratory, muscle.
A unit of pain, or, more simply, the power of pain, in which a person notes the discomfort associated with getting a pain syndrome, has occupied the minds of scientists for a long time. There is even a special science - algology - the science of pain. In order to determine when a person becomes hurt, a special device was invented - an algesimeter, which measures the force that needs to be applied to the surface of the skin so that a person experiences painful sensations. The effect of the algesimeter, however, is highly controversial. An organism that is able to adapt to various environmental conditions, after a while, ceases to feel pain so strongly on a certain irritant, if this irritant acts with a certain periodicity. Roughly speaking, if you prick a finger a hundred times with a needle, then the hundred and first one may not be felt. Therefore, it is impossible to see a perfect device in the operation of an algesimeter, however, it is possible to find out only approximately to what pain power a person is susceptible, without calculating any clear indicator.
Saying that the unit of pain is universal is also impossible. After all, the pain threshold, no matter what figures it is determined by scientists, is individual for each person. It is enough to cite the most common question that will constantly be exaggerated in society - does it hurt to give birth or not. Judging by the expressions of some ladies, these are hellish pains that simply cannot be endured. Other interlocutors argue that they did not even notice the period of labor and childbirth, but felt only a tolerant nagging in the lower abdomen. Already this example proves that each unit of pain is different. And in America there is a girl who does not feel pain. As doctors later found out, the child is affected by the genes that are responsible for this protective reaction, as a result of which the unit of pain was zero.
Pain is a fairly controlled reaction. It is possible to manage it, and people with different pain thresholds can do it. As mentioned above, when pain occurs, the nervous system is activated , which sends a pain signal from the site of the lesion to the brain. Not many can control and process such information. Nevertheless, we know vivid examples when people withstand burning coals, pierce soft tissues with needles and hooks. And this is not for the sake of the show - just a long-term systematic work was going on to block pain impulses. Such secrets and puzzles are not revealed even now, but it is clear that these people are prone to nociception - the wrong (in this case, reduced) perception of pain.
To date, English scientists have conducted a series of experiments in which people were tested for endurance to pain and impulses were recorded under certain influences. Studies have shown that there are organs in which the response to pain was the strongest. But the unit of pain - del - is still relative. Due to many factors, it is unlikely that it will be possible to accurately determine the strength of pain and correlate it with any indicators.