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Hypertrophic Scars

Hypertrophic Scars

Scars are areas of fibrous tissue (fibrosis) that replace normal skin after injury. A scar results from the biological process of wound repair in the skin and other tissues of the body. Thus, scarring is a natural part of the healing process. With the exception of very minor lesions, every wound (e.g. after accident, disease, or surgery) results in some degree of scarring. An exception to this is animals with regeneration, which do not form scars and the tissue will grow back exactly as before.

Scar tissue is made of the same protein (collagen) 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 form a pronounced alignment in a single direction. This collagen scar tissue alignment is usually of inferior functional quality to the normal collagen randomised alignment. For example, scars in the skin are less resistant to ultraviolet radiation, and sweat glands and hair follicles do not grow back within scar tissue. A myocardial infarction, commonly known as a heart attack, causes scar formation in the heart muscle, which leads to loss of muscular power and possibly heart failure. However, there are some tissues (e.g. bone) that can heal without any structural or functional deterioration.

For centuries, keloids and hypertrophic scars have been recognized as abnormal responses to trauma. Although morphologic differences between these two entities have been acknowledged for years, discovery of a histopathologic distinction is more recent.

The keloid is defined as an abnormal scar that grows beyond the boundaries of the original site of skin injury. Keloids have the clinical appearance of a raised amorphous growth and are frequently associated with pruritus and pain, as in the first 2 images below. Scanning electron microscopy reveals a number of distinguishing features, including randomly organized collagen fibers in a dense connective tissue matrix. In normal scars, the collagen bundles are arranged parallel to the skin surface.

Skin Resurfacing

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Click On Your Skin Concern Microdermabrasion Exfoliating Acne Scars Raised Scars Stretch Marks
BIOSKINEXFOL [x] [x] [x] [x] [x]

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