Tag Archives: scar structure

Basic Scar Science

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Why do scars have different colors?


New scars would always turn out to be red or purple in color as a result of damaged blood vessels and inflammation. These are hyperpigmented scars. Older scars are white in color. Resulting from the inflammation and damage to the blood vessels and cells loss of pigmentproducing,cells occur. The scar becomes hypopigmented (pale), because of the loss of skin pigment. The skin has a great capacity to regenerate itself. The scars are a sign of the skin attempting to heal itself. Normally when the skin is quickly repaired, the new skin may have a different appearance. This persistent in the formation of the scars that don’t fade away.

How long does it normally take for scars to fade to their final color?

Generally, major scars from either surgery or injury take about six to twelve months to fade to
their final color.

How good is scar revisioning?

Do some people have a predisposition to develop more prominent scars?

It believed that genetic factors play a role in the scarring process. Scarring may be more disfiguring for some people. There has been new treatment developed that can help scars fade
away.

What causes scars?

Scars are a permanent mark that indicates the skin’s attempt to heal itself. When the skin is damaged the top layer occurs, cells to quickly multiply to form new cells to fill in the gap. When the wound is deeper into the underlying skin tissue, the cells that form collagen are stimulated and they fill in the gap by producing abundant fibrous connective tissue. If the density of this new tissue is relatively extensive it is usually replaced by normal skin layer over time. A result of a persistent scar remains, when the mass of new tissue is relatively extensive it is associated to cell damage and the fibrous tissue remains.

The Nature of Scars

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Scars are the result of our natural biological process of wound healing. This repairing takes place in the skin and in other body tissues. The external scars of the skin most often comes to mind even though injured internal parts of the body can heal with scar tissue. Often a doctor can diagnose a condition based on some internal scarring of an organ such as the liver, lungs or kidneys.

Regenrative Animals do not scar

What Are Scars?

Scars are areas of fibrous tissue (fibrosis) that replaces normal skin or organ tissue after injury. This is why it is said that scarring is a normal part of the healing process. Every wound (e.g. after accident, disease, or surgery) has some degree of scarring. There are some exceptions to this in the animal world. These animals undergo regeneration, which do not form scars and the tissue will grow back exactly as before. Some examples are:

• Lizards who lose all or part of their tails can grow new ones. Most
lizards can regrow a tail within nine months.

• Planarians are flat worms. If cut into pieces, each piece can grow
into a new worm.

• Sea cucumbers have bodies that can grow to be three feet long. If
cut into pieces, each one can become a new sea cucumber.

• Sharks continually replace lost teeth. They can grow as many as
24,000 teeth in a lifetime.

• Spiders can regrow missing legs or parts of legs.

• Sponges can be divided. In that case, the cells of the sponge will
regrow and combine exactly as before.

• Starfish that lose arms can grow new ones; sometimes an entire
animal can grow from a single lost arm.

As mammals, humans just aren’t that fortunate. Scars are part of our existence for better or worse.

Variant Formation of Scars

• Scar tissue is the same protein (collagen) as the tissue that it
replaces, but the fiber composition of the protein is different;
instead of a random basket weave formation of the collagen fibers
found in normal tissue
• Scar tissue is fibrosis and the collagen cross-links forms a
pronounced alignment in a single direction.

Scar Tissue has inferior functionality

• Scars in the skin are less resistant to ultraviolet radiation
• Sweat glands and hair follicles do not grow back within scar tissue
• A heart attack causes scar formation in the heart muscle, which
leads to loss of muscular power and possibly heart failure.
• Bones can be an exception they can heal without any structural or
functional deterioration.