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Some human organs and tissues regenerate rather than simply scar, as a result of injury. These include the liver, fingertips, and endometrium. More information is now known regarding the passive replacement of tissues in the human body, as well as the mechanics of stem cells. Advances in research have enabled the induced regeneration of many ...
In a major injury, if epithelial cell migration and tissue contraction cannot cover the wound, suturing the edges of the injured skin together, or even replacement of lost skin with skin grafts, may be required to restore the skin. As epithelial cells continue to migrate around the scab, the dermis is repaired by the activity of stem cells.
Skin pigmentation in humans evolved to primarily regulate the amount of ultraviolet radiation (UVR) penetrating the skin, controlling its biochemical effects. [ 17 ] The actual skin colour of different humans is affected by many substances, although the single most important substance determining human skin colour is the pigment melanin .
The use of fish skin with its natural constituent of omega 3, has been developed by an Icelandic company Kereceis. [50] Omega 3 is a natural anti-inflammatory, and the fish skin material acts as a scaffold for cell regeneration. [51] [52] In 2016 their product Omega3 Wound was approved by the FDA for the treatment of chronic wounds and burns. [51]
Potentiates CNS sedatives, [3] chronic use might cause a reversible dry skin condition. [18] Khat: qat Catha edulis: Chronic liver dysfunction [3] [19] Kratom: Mitragyna speciosa: Hepatotoxicity [20] [19] Liquorice root Glycyrrhiza glabra: Hypokalemia, hypertension, arrhythmias, edema [5] Lobelia: asthma weed, pukeweed, vomit wort Lobelia inflata
Common side effects when used as a cream are limited to the skin and include skin redness, peeling, and sun sensitivity. [10] When taken by mouth, side effects include hypertriglyceridemia, hypercholesterolemia, shortness of breath, headache, numbness, depression, skin dryness, itchiness, hair loss, vomiting, muscle pains, and vision changes. [8]
Cosmetics; Medical makeup can temporarily conceal scars. [60] This is most commonly used for facial scars. Dermabrasion involves the removal of the surface of the skin with special equipment, and usually involves a local anaesthetic. A 2012 literature review found weak evidence that massage was efficacious in scar management.
Rejuvenation technology and its effects on individuals and society have long been a subject of science fiction. The Misspent Youth and Commonwealth Saga by Peter F. Hamilton are among the most well known examples of this, dealing with the short- and long-term effects of a near perfect 80-year-old to 20-year-old body change with mind intact.