Tips on Acne
Posted on September 9, 2008
» Filed Under Acne |
SEBACEOUS GLANDS: In mammals, these are tiny glands in the DERMIS of the skin, that protect the skin by secretion of SEBUM.
SEBUM: This is the oily substance secreted by the sebaceous glands that lubricates and waterproofs the hair and skin.
Follicles, often called pores, sometimes get blocked. Sebum (oil) which normally drains to the surface gets blocked and bacteria begins to grow. Both whiteheads and blackheads start out as a microcomedone. Microcomedones become non-inflamed skin blemishes called comedones–either a whitehead or a blackhead:
When the trapped sebum and bacteria stay below the skin surface, a whitehead is formed. Whiteheads may show up as tiny white spots, or they may be so small that they are invisible to the naked eye.
A blackhead occurs when the pore opens to the surface, and the sebum, which contains the skin pigment melanin, oxidizes and turns a brown/black color. It is not dirt and can not be washed away.
Blackheads can last for a long time because the contents very slowly come to the surface.
A papule occurs when there is a break in the follicular wall. White blood cells rush in and the pore becomes inflamed.
A pustule forms several days later when white blood cells find their way to the surface of the skin. This is what people usually refer to as a “zit” or a “pimple”.
An inflamed lesion can sometimes completely collapse or explode, severely inflaming the surrounding skin, and sometimes engulfing neighbouring follicles. These lesions are called nodules or cysts: When a follicle breaks along the bottom, total collapse can occur, causing a large, inflamed bump that can be sore to the touch. Sometimes a severe inflammatory reaction can result in very large pus filled lesions.
Milia are tiny white bumps that occur when normally sloughed skin cells get trapped in small pockets on the surface of the skin. They are common in newborns across the nose and upper cheeks and can also be seen on adult skin. The bumps disappear as the surface is worn away and the dead skin is sloughed. In newborns, the bumps usually disappear within the first few weeks of life. However, for adults milia may persist indefinitely.
Treatment is usually not indicated in children. Adults can have them removed by a physician for cosmetic improvement. Milia are tiny white bumps that occur when normally sloughed skin cells get trapped in small pockets on the surface of the skin. They are common in newborns across the nose and upper cheeks and can also be seen on adult skin. The bumps disappear as the surface is worn away and the dead skin is sloughed. In newborns, the bumps usually disappear within the first few weeks of life. However, for adults milia may persist indefinitely.
Treatment is usually not indicated in children. Adults can have them removed by a physician for cosmetic improvement.
Milia are tiny white bumps that occur when normally sloughed skin cells get trapped in small pockets on the surface of the skin. They are common in newborns across the nose and upper cheeks and can also be seen on adult skin. The bumps disappear as the surface is worn away and the dead skin is sloughed. In newborns, the bumps usually disappear within the first few weeks of life. However, for adults milia may persist indefinitely.
Treatment is usually not indicated in children. Adults can have them removed by a physician for cosmetic improvement.
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