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In severe cases, it can affect movement of skin. In the United States, keloid scars are seen 15 times more frequently in people of sub-Saharan African descent than in people of European descent. [3] There is a higher tendency to develop a keloid among those with a family history of keloids and people between the ages of 10 and 30 years. [4]
Queloides or keloids are raised scars that, as many in Cuba believe, appear most frequently on the black skin. The title makes reference to the scars of racism , on the one hand, and to persistent popular beliefs that there are "natural" differences between whites and blacks.
Prolonged cases of AKN can cause keloid formation due to chronic irritation from folliculitis. Bacterial folliculitis and acne can mimic the appearance of AKN; however, unlike acne, comedones are not seen with AKN. Treatments for AKN aim to reduce inflammation and prevent infections and scarring.
The skin weighs an average of four kilograms, covers an area of two square metres, and is made of three distinct layers: the epidermis, dermis, and subcutaneous tissue. [1] The two main types of human skin are: glabrous skin, the hairless skin on the palms and soles (also referred to as the "palmoplantar" surfaces), and hair-bearing skin. [3]
A hypertrophic scar is a cutaneous condition characterized by deposits of excessive amounts of collagen which gives rise to a raised scar, but not to the degree observed with keloids. [1] Like keloids, they form most often at the sites of pimples, body piercings, cuts and burns. They often contain nerves and blood vessels.
In general, it is recommended that people with acne do not wash affected skin more than twice daily. [15] The application of a fragrance-free moisturizer to sensitive and acne-prone skin may reduce irritation. Skin irritation from acne medications typically peaks at two weeks after onset of use and tends to improve with continued use. [15]
The exact mechanism of action of silicone gel sheeting has not been fully studied. Currently, many proposed mechanisms explain the efficacy of such treatment, including the occlusion and hydration effect, increased body surface temperature, polarized electric charge, immunological effects, etc. [9] The occlusion and hydration effect is the most studied mechanism of action.
Clarification please: A sentence in the current revision is "It is speculated that people who possess any degree of African descent, regardless of skin color, may be especially susceptible to keloid occurrences." According to Mitochondrial Eve, a common ancestor of all humans comes from Eastern Sub-Saharan Africa. As such, all humans are of ...