Where does scar tissue form after an injury?
Underneath, the reparative collagen fibers remain, forming what we call scar tissue. You can observe this process if the injury is superficial such as a gash in the skin, but this process also happens in ligament, tendon, muscle and bone tissue injuries where there is no damage to the skin above.
What are the different types of scar tissue?
A keloid is a raised, red-skin colored plaque of scar tissue that can form on tissues after an injury. Keloids often appear on the upper chest, shoulders, and upper back. A hypertrophic scar is a more common form of scar tissue. People with hypertrophic scars may notice that they fade over time.
How does the granulation phase of scar tissue work?
The granulation phase varies greatly depending on the type of tissue and the extent of the damage. Generally speaking, the entire process of scar tissue formation is lengthened if the damaged tissue is less vascular in its nontraumatized state.
What causes scar tissue to form in the heart?
Scar tissue formation in the internal organs, like the liver, also happens due to alcohol abuse. In the heart, scar tissue may form as a result of a previous myocardial infarction, myocarditis or an infection in the heart muscles or heart wall (pericarditis).
How do keloid scars form?
A keloid is a type of scar that forms mainly from collagen and an overgrowth of tissue caused by a healed skin injury. Commonly formed after some piercings, these scars are benign and although not contagious, they can cause itchiness, pain, and permanent hair loss.
How do acne marks?
Acne marks are due to inflammation. When skin is under attack, it sends plenty of white blood cells (your body’s natural police force) into the bloodstream. This increases blood flow to the injured area, which now turns red. Problem is, your body’s police doesn’t come alone.
Is collagen scar tissue?
Collagen is but a component of scar tissue. It is produced by and deposited by scar cells ( Fibroblasts ) found in nearly all tissues. When we say that something “produces collagen” it is a clever marketing way of saying the product causes an injury resulting in scar deposition.
What is scar formation?
Scar formation is a natural process and part of the process of wound healing. This results in production of a tissue that is, to some extent, structurally and functionally different from the normal skin. The appearance of scars change over time. The color and thickness of the scar often improves after several years.