What is a scar?

What is a scar, a detailed explanation of the scar!

"Scar" is the damage of physical, biological, chemical and other factors that act on the human skin and soft tissues, causing serious damage to the skin and soft tissues, which cannot be completely repaired on its own. The fibrous tissue is replaced by a local symptom that affects both appearance and function. . "Scars" bring huge physical pain and mental pain to patients, especially scars left over after burns, scalds, and severe trauma. The years of scar hyperplasia almost made the patient miserable. The subsequent period of atrophy makes the patient completely unrecognizable and dysfunctional, causing the patient's enormous physical and mental disorders.

Scar characteristics

The skin surface is tumor-like hyperplasia, the surface is smooth, the color is ruddy and shiny, and dilated capillaries are often found. The skin damage protrudes from the edge and the crab feet are deformed. The skin lesions are of the same size, different in appearance, and hard, such as cartilage-like, and the symptoms are more itchy and uncomfortable or painful or burning. As the pain is sensitive, it may be caused by the conduction sensitivity of nerve endings or the formation of microneuroma, and even the light touch of clothes may cause pain. The development is relatively slow, and most of them continue to increase. Some scars have shiny epidermis and surrounding tissues and are slightly white in color. It rarely retreats on its own, and occasionally has malignant changes. Keloid scars usually occur on the chest, shoulders, neck, back and auricles, but rarely on the eyelids, palms, plantars and external genitals. Although keloid scars are more common, the cause is still unknown, which brings great difficulties to treatment. How to inhibit the frenzied proliferation of fibroblasts, prevent their recurrence and continue to grow has become a difficulty in the medical field today. The current treatment methods are as follows: surgical resection, abrasion, laser, radiation, local sealing, freezing, etc. Single treatment often fails to achieve satisfactory results and tends to make the affected area worse. For example, the recurrence rate of surgical resection is high, laser sealing is often painful, and a variety of diseases occur, such as irregular menstruation in women, and impotence and obesity in men. Skin abrasion, laser, freezing, etc. cannot prevent recurrence, which makes many patients and doctors feel very difficult. Many doctors even answered their patients: "Keloid scars are more difficult to treat than cancer." In fact, this view is quite one-sided. Keloids and hyperproliferation of scars are an important complication of trauma and trauma. There are many reasons for scars, such as burns, trauma, trauma, acne (acne), ear holes, and vaccinations. Different degrees of scar hyperplasia and keloid scars. Its anticipated measures are mainly in the immature stage before and between scar formation. The main purpose is to remove as much as possible the factors that cause scar hyperplasia, reduce the growth of scars, and prevent various deformities and dysfunctions caused by scars to the body.

The importance and harm of scars

Scars are an inevitable product in the process of human wound repair. Broadly speaking, there is no wound healing without scars. The main component of scar tissue is fibrin. The production and deposition of scar tissue collagen increases the strength of the wound, which is beneficial in a general sense. If the scar tissue is not formed sufficiently, the damaged tissue cannot get normal tension, which can lead to many complications, such as the scars healed by the abdominal incision is weak, the scar can be re-opened or the abdominal content under the action of intra-abdominal pressure Objects gradually bulge outwards to form abdominal wall hernias. On the contrary, if the scar is formed excessively, it can cause serious appearance or functionally important problems. The hazard of scars depends on its nature and characteristics, as well as the secondary fixation effect on deep tissues. Therefore, the scar is always an imperfect replacement compared to the tissue before injury. From a mechanical point of view, its resistance is weakened; from a nutritional point of view, it causes obstacles to the exchange of oxygen and nutrients; from a functional point of view, it causes deformity and dysfunction of damaged tissues. From an aesthetic point of view, it causes appearance. Destruction.