Exposure to heat and cold.

Burns are damage to soft tissue, usually caused by exposure to high temperatures. Burns can be caused by chemicals, electrical current, or sunlight.
Description of burns
The burn first affects the top layer of skin - the epidermis. If the burn is advanced, the underlying layer of skin is also damaged. When a burn occurs, the integrity of the skin is compromised, which can lead to infection, loss of fluid, and disruption of thermoregulation. Deep burns can destroy the lower layers of tissue. They can also cause damage to the respiratory system and eyes.
The severity of the burn depends on:
• temperature;
• reasons that caused the burn;
• duration of action;
• location on the body;
• area of ​​damage;
• depth of damage;
• the age of the victim and his state of health
rowya. Typically, people over 60-
you, children under 5 years old and chronic sicknesses
ri have a lower degree of transfer
incurring burns than others.
Types of burns
Burns are distinguished according to the reasons that caused them and the depth of penetration:
• first stage (surface),
• second stage (moderately deep),
• third stage (deep).
The deeper the burn, the higher the severity.
First degree burns
A first-stage burn involves only the top layer of skin. The skin becomes red and dry, usually painful. There may be swelling at the burn site. First degree burns are usually

lasts for 5-6 days without leaving scars.
Second degree burns
Second-degree burns damage both layers of skin—the epidermis and the dermis. These burns are caused by exposure to heat or strong sunlight, as well as chemical burns. The skin becomes red and blisters form that may burst. The blisters ooze clear fluid, leaving the skin moist. Burnt skin may appear patchy. Such burns are usually painful and accompanied by swelling of the damaged area. Healing usually occurs within three to four weeks. Scar formation is possible.
Third degree burns
A third-degree burn destroys both layers of skin and deep-lying tissue - nerves, blood vessels, fat, muscle and bone tissue. Third degree burns occur when exposed to very high temperatures, flames, electric current or lightning strikes. The skin from these burns appears charred (black) or waxy white. These burns are usually painless, because this causes damage to the nerve endings of the integument. With extensive third-stage burns, the life of the victim is threatened due to loss of fluid, which leads to a state of shock. Infection is also possible. Third-stage burns leave rough scars on the body and often require skin grafts.