Acne, most commonly, occurs when the pores of the skin become clogged. Each pore corresponds to a hair follicle, which includes hair and oil glands. If the gland becomes blocked, hair and oil become trapped inside it, leading to the formation of pimples.
During adolescence, overproduction of sebum due to hormonal changes leads to the appearance of acne. Also, cosmetics that are not indicated for the skin type of the individual can lead to the appearance of acne. This is because they "block" the pores of the hair follicles, resulting in the appearance of acne.
Taking medications, such as chronic cortisone intake, can also lead to the appearance of acne. Certain foods, such as high-fat foods, chocolate and alcohol, have been implicated in the development of acne.
Acne usually manifests itself in the form of cysts, papules and pustules (red pimples with white or yellow pus). Often there is intense redness at the sites of the cysts. It may also appear with black or white spots. Acne occurs mainly on the face and neck, as well as on the body, back, chest and shoulders.
Depending on its type and severity, acne is divided into the following categories:
Rosacea is a chronic inflammatory condition of the facial skin. It usually appears as a severe erythema (redness) mainly on the cheeks and nose. It may also appear on the forehead or chin, and rarely occurs on the scalp.
In addition to the redness, there may be pimples and inflammation, papules and swelling of the blood vessels in the nose and cheeks. In some cases, spider veins and itching in the area are also observed.
The Demodex folliculorum mite, which is naturally present in human skin, has been implicated in its occurrence. It is essentially a parasite, which 'feeds' on the hair follicles of the face.
For the treatment of rosacea, the detection of the mites in the skin must be preceded and then, the appropriate treatment should be proposed.