Goosebumps in humans are a mysterious phenomenon. The medical name for pimples on the skin is paresthesia.
When do goosebumps appear?
From a scientific point of view, the cause of goosebumps lies in the irritation of nerve endings. The influence of an external factor causes a response - an involuntary contraction of the muscles of the hair follicles. The reflex reaction leads to the raising of hairs on the skin, or piloerection. Together with the appearance of goosebumps, a person feels a slight tingling or numbness. A modification of the epidermis is observed in the area, usually below the irritation zone.
Reasons for the appearance
With the elimination of the cause goosebumps go away. Temporary paresthesia is not a pathology, does not require treatment. Many factors can provoke the phenomenon:
- hypothermia;
- uncomfortable posture;
- excitement;
- bright emotions.
The appearance of goose bumps is affected by the hormone adrenaline. Emotional natures more often than balanced people experience a feeling of trembling skin, or "running insects." The release of adrenaline into the bloodstream triggers a reflex process. In addition to goosebumps, a person often experiences a chill between the shoulder blades, lack of air.
Popularly, external reflex changes are called the effect of goose bumps. They say that goosebumps ran on the back, hands covered with pimples.
Interesting fact: on the face, the effect of irritation of nerve endings is not reflected.
Why do goosebumps appear?
Goosebumps as a reflex contraction of muscles, a person inherited from ancient ancestors.A rudimentary phenomenon unites the modern man with all mammals on the planet. The unusual sensation is of practical importance, but people do not use the natural gift.
Interesting fact: The secret is revealed in observations of animals. If you scare a domestic cat, then her hair stands on end. Hedgehog during an unexpected meeting raises needles.
Having increased in size, the animals appear more formidable to the enemy. Animals even stand opposite the enemy sideways to demonstrate power, inspire fear in the opponent.
In winter, on frosty days, street dogs involuntarily scoop up wool to maintain heat. Raised hairs hold air warmed by the body from the skin. So animals show natural self-defense from an unfavorable environment.
Wool on the face of the beast does not stand on end under any circumstances. A good view is vital to any wild animal, especially in times of danger. The facial zone is excluded in the reflex process in order to better see. Man inherited this feature as a manifestation of the norm in the functioning of the nervous system.
Why is there no goosebumps on my face?
Human hair, in contrast to animals, is so rare and small that even visually it is not always possible to notice it. In minutes of emotional stress and fear, thin hairs on the skin also rise, although this effect is of no practical use.
Goosebumps do not betray our condition by a sudden appearance on our faces. But they honestly record internal overexcitation by a ticklish tingling in other places.Their signals give an assessment of what is happening. If they say that you are indifferent, and goosebumps run along your back, then the truth is not in words. The mind can dictate the manifestation of courage, but the state of fear that a person overcomes will be reflected by goose bumps.
Wise nature excluded the face from the localization of symptoms of irritation of nerve endings. To animals - to increase the chances of survival, to humans - to self-evaluate their capabilities, adaptation in society. Goosebumps will only tell you personally which emotional shock or physical test had to be overcome while saving face.
