Pimples, acne is a problem, from which at one time or another during their life suffers most people. Most often the problem of acne complicated by purulent acne, there are young men at puberty.
Since acne (pimples) - a disease of the sebaceous glands, it is most often all manifestations of the disease acne - blackheads and pimples appear on the so-called seborrhoeic areas, ie those areas of the skin, which is located the greatest number of sebaceous glands. These zones are located on the face, chest and back. Usually onset coincides with the period of life when the sebaceous glands begin to work hard, that is during puberty. Therefore, most acne (pimples) are observed in adolescents. However, this disease may suffer more than men of mature age. Acne can occur on the skin in the form of inflammatory elements ("pimples", pustules) and noninflammatory elements - comedones (blackheads). Comedones are of two types: open, in the form of unsightly black spots on the skin and private - in the form of whitish, small nodules. It comes amid increased greasiness of skin.
The main cause of acne is the clogging of the sebaceous gland ductless. This is due to the fact that the horny scales of skin that normally die off on their own regularly updated and are no longer just flakes off in a sebaceous gland. As a result, they accumulate and impede the free flow of sebum. Those skin flakes, along with bacon form a kind of "congestion" in the sebaceous glands - comedo, which can appear as black or whitish spots or nodules.
Apart from the fact that the outflow of sebum in humans the disease is difficult, a situation exacerbated by the fact that the sebaceous glands they are working hard and produce too much sebum. Therefore, it is often the appearance of the skin of acne is accompanied by improved greasiness of the skin - seborrhea.
Both that and the other is genetically caused, then it depends on heredity. Therefore, if parents of teens were once eels, their child will most likely also will suffer from this disease.
Development of the disease may also contribute to some diseases of the endocrine and sex glands. For example, the appearance of pink eels and difficulties in their treatment of women may be due to hormonal imbalance, and increasing depletion of male sex hormones.
Causes of acne can be distinguished by four factors, the combined effect of which are the causes of acne:
The first reason for the appearance of acne: excess fat selection of sebaceous glands;
The second reason for the pink acne: follicular hyperkeratosis. The outer layer of skin called the human horny. In this disease there is no desquamation of keratinized, dead skin plates of this layer and is clogging of the sebaceous glands.

The third reason for the appearance of pimples (acne): reproduction Propionibacterium acnes, propionic bacteria acne. But it is worth noting that the acne bacteria live in the mouth of the sebaceous glands and totally healthy people, along with representatives of the cutaneous microflora, as Propionibacterium granulosum, Staphylococcus bacteria, Staphylococcus epidermidis, Malassezia fungi and tiny mites Demodex (demodex). But all these bacteria are very rarely a cause of acne in healthy people.
The fourth reason, the appearance of pimples (acne) - Inflammation: active microorganisms leads to the development of substances that are extremely irritating effect on the fabric.
Besides the already mentioned, the internal causes of acne is of great importance disruption of the endocrine system and gastrointestinal tract, as well as in properly selected cosmetics. For example, some cosmetics have the ability to cause acne.
For example, this property substances such as petrolatum, lanolin, paraffin and some vegetable oils (sesame, olive, peanut, coconut), sodium sulfate, octanol, sulfur, pigments, stearic acid, izopropilmeristat, polyethylene glycol. These substances can clog the ducts of the sebaceous glands, which leads to a deterioration of the skin.
Deterioration of the disease can also occur after the use of drugs containing steroids. Also to the formation of acne or increase their numbers can lead mechanical compression of the skin (eg, tight clothing), heavy sweating, moist air from entering the skin engine and industrial oils, tar. Thus, the development of acne has many causes, and their treatment requires a systematic approach.
So, what happens to the skin in acne. As a result of accumulation and adhesion of skin flakes in the sebaceous gland is formed tube - comedo. This plug blocks the sebaceous glands and prevents the outflow of sebum. As a result, the sebum accumulates in the gland. Under these conditions, the bacteria that normally live on the skin and in the sebaceous glands begin to proliferate, which leads to inflammation. Thus the image of rosacea.
Acne can occur for years, often greatly complicating the patient's life. After all, acne, and sometimes the scars that appear in their place, causing a significant cosmetic defect. This, in turn, leads to mental and emotional disorders, produces complexes, prevents free communication between people, some studies or employment.