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With physical trauma or disease suffered by an organism, healing involves the repairing of damaged tissue(s), organs and the biological system as a whole and resumption of (normal) functioning. Medicine includes the process by which the cells in the body regenerate and repair to reduce the size of a damaged or necrotic area and replace it with ...
In the event of an injury that damages the skin's protective barrier, the body triggers a response called wound healing. After hemostasis, inflammation white blood cells, including phagocytic macrophages arrive at the injury site. Once the invading microorganisms have been brought under control, the skin proceeds to heal itself.
Wound healing refers to a living organism's replacement of destroyed or damaged tissue by newly produced tissue. [1] In undamaged skin, the epidermis (surface, epithelial layer) and dermis (deeper, connective layer) form a protective barrier against the external environment. When the barrier is broken, a regulated sequence of biochemical events ...
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Healing by secondary intention can take up to months, requires daily wound care, and leaves an unfavorable scar, thus primary closure is always preferred when possible. [ 27 ] [ 35 ] As an alternative, wounds that cannot be closed primarily can be addressed with skin grafting or flap reconstruction , typically done by a plastic surgeon . [ 33 ]
These are caused when the skin is stretched rapidly (for instance during pregnancy, [12] significant weight gain, or adolescent growth spurts), [13] or when skin is put under tension during the healing process (usually near joints). This type of scar usually improves in appearance after a few years.
As skin ages, it becomes thinner and more easily damaged. Intensifying this effect is the decreasing ability of skin to heal itself as a person ages. Among other things, skin ageing is noted by a decrease in volume and elasticity. There are many internal and external causes to skin ageing. For example, ageing skin receives less blood flow and ...
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