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For the Nuba tribe of Sudan, scars can serve a medicinal purpose; scars above the eyes are believed to improve eyesight, and scars on the temples are believed to help relieve headaches. [14] In some cultures, scarification is used in traditional medicine to treat some illness by inserting medicine (usually herbs or powdered root) under the skin ...
They are usually replaced by the fibrous tissue. The result is the formation of an inflexible, fibrous scar tissue. Human skin cells are capable of repairing UV-induced DNA damages by the process of nucleotide excision repair. [2] This repair process protects against skin cancer. [2]
Scar tissue is composed of the same protein as the tissue that it replaces, but the fiber composition of the protein is different; instead of a random basketweave formation of the collagen fibers found in normal tissue, in fibrosis the collagen cross-links and forms a pronounced alignment in a single direction. [1]
Cicatrization, also spelled cicatrisation (from Latin cicatrix, meaning "scar"), is the contraction of fibrous tissue formed at a wound site by fibroblasts, reducing the size of the wound while distorting tissue. It may refer to: The process of a wound healing to produce scar tissue
Timing is important to wound healing. Critically, the timing of wound re-epithelialization can decide the outcome of the healing. [11] If the epithelization of tissue over a denuded area is slow, a scar will form over many weeks, or months; [12] [13] If the epithelization of a wounded area is fast, the healing will result in regeneration.
Abrasions on elbow and lower arm. The elbow wound will produce a permanent scar. A first-degree abrasion involves only epidermal injury. A second-degree abrasion involves the epidermis as well as the dermis and may bleed slightly. A third-degree abrasion involves damage to the subcutaneous layer and the skin and is often called an avulsion.
Most skin injury types can contribute to scarring. This includes burns, acne scars, chickenpox scars, ear piercing, scratches, surgical incisions, and vaccination sites. According to the US National Center for Biotechnology Information, keloid scarring is common in young people between the ages of 10 and 20. Studies have shown that those with ...
Hard corns are especially problematic for people with insensitive skin due to damaged nerves (e.g., in people with diabetes mellitus), as they more readily become infected and potentially lead to gangrene. In others they may interfere with walking and lead to the medical complications of a lack of movement and exercise.
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