Our bodies are frequently injured by aggressive agents.
More or less serious injuries, triggered in different ways, destroying parts of the body, which from that time need repair.
The skin, being the most peripheral and superficial, is the most frequently injured. Wrap as structures internally situated, has a resistance greater than the organs involved.
If we consider a muscle, or a portion of intestine, or any other organ, the skin is stronger, except, of course, the bones that have a high resistance and can be considered the most powerful body.
It is called the healing phenomenon by which the body attempts to repair a damaged portion.
If an offending agent causes damage to a spot immediately occurs a series of phenomena that seek to reorganize that area and develop in the same order, with the purpose of repair.
To understand the different phenomena that occur during this repair will be described the process of healing of a skin lesion.
Imagine that, working in the kitchen with a knife, a housewife cut a 1cm portion of the pulp of the thumb on the right side
Immediately after injury bleeding occurs more or less important, because blood vessels (capillaries, veins and arteries) are sectioned for the lesion. After a certain time the phenomenon of hemostasis, that is the blood coagulation end of the broken blood vessels.
Bleeding in these situations the best approach you can have is a slight compression on the bleeding area.
Immediately, the entire region to be thoroughly washed to remove the blood clots and foreign elements (impurities) which can be present in the traumatized area.
This cleaning should be careful enough not to remove the small clots that are blocking the end of the bleeding vessels, preventing the maintenance of your bleeding. It is popular knowledge that one cleaning with rubbing very deep in the injured region, triggers the continuation of bleeding, which is exactly what you want to avoid.
This phenomenon of hemostasis occurs in the first minutes after injury and aims to prevent blood loss.
From the time of injury until the first two days is called the inflammatory phase, characterized by the departure of leucocytes within the capillaries (diapedesis phenomenon), with the aim of “cleansing” (by phagocytosis) of the particles that are housed the area of lesion. This phenomenon (phagocytosis) allows microbes, tissue fragments and other foreign bodies can be removed from the traumatized area.
While these phenomena are occurring there is a proliferation of capillaries with an increase in their number, allowing increased blood content in reaching the region.
With the leakage of fluid in the wound area is a swelling (inchume), which gives the external appearance increased the area of injury. The reddish regional zones in the healing process has the following characteristics due to vasodilation and increase in the number of capillaries.
Along with these phenomena, the portion of the skin there is a dramatic increase of cell multiplication (mitosis) that enable the fulfillment of this area with injured epithelial cells. These cells tend to close and waterproof the wound area.
All these phenomena are disclosed herein to occur within the first 24 hours after injury.
Maturation of the scar and variables
After the third day of injury starts in the injured area a deposit of collagen which is a substance that allows a fibrous union between the two surfaces of the wound. During the next two weeks the proliferation of epithelial cells and accumulation of collagen allow a grip more resistant to injured area.
The reddish color of the scar until now clearly begins to fade and become white, as there is a decrease in the amount of regional capillaries.
In the first month after injury scar traumatized in the zone is covered by a layer of epithelial tissue integrity.
In fact the whole process of healing lasts a few months (more than six) to complete. During this time there is the maturation of the scar that is characterized by bleaching and enlargement.
Importantly, this whole healing process has individual variables that depend on genetic and environmental factors. In this way the healing of an individual can not be compared with the healing of another, or even the person’s body has an area other different characteristics.
Another factor worth noting is the fact that healing is a biological phenomenon that has peculiarities that are independent of treatment.
Even an injury can be adequately dealt with an unfavorable outcome and result in a scar of poor quality.
In the example described earlier in this text, the wound in the thumb of the housewife, it is striking that even a minor injury like this is an irreversible evolution. Depend on the type of treatment.
What may vary is the type of scar, but the outbreak of the phenomenon is a sequence of facts, as stated above, irreversible.