Director of Dermatology: How to prevent "acne"

Recently, some health essays on how to prevent and cure "acne" have spread in white-collar workers. Some are quite reasonable, while others are not. In this issue of Health Weekly's "Hot Comments", please come to Professor Li Daning, Director of the Dermatology Department of Xuhui District Central Hospital, for the readers.

Ms. Xu, a 25-year-old white-collar worker, has suffered from “acne” for several years. She always makes a burst of it for a while. After the Spring Festival, her face is full of acne, which makes her look upset. For a large number of white-collar women, hemorrhoids have become the biggest cosmetic problem.

[Hot text playback] often acne only because of physical acidity? Ms. Xu saw a statement in a health article that was forwarded many times by friends that people who are prone to acne are usually acidic.

According to this article, there is a large amount of acidosis in the human body. Because the sweat glands are responsible for the acid discharge in minutes and seconds, the surface of the skin is susceptible to acidic reactions. When a large amount of acidic metabolites are formed in the body, the skin is bound to bear the responsibility of the body to discharge acid, and under the stimulation of "acid poison", acne will be produced. In particular, people who are accustomed to eating a large amount of acidic foods have long-term body fluid acidification and acidity, and a large amount of "acid poison" is accumulated in the body, which is more likely to generate acne.

[Expert comment] Excessive sebum secretion is the culprit

Li Daning, director of the dermatology department at Xuhui District Central Hospital, said that this statement is unscientific. There is no such thing as acidity and alkalinity in modern medicine. The pH of each person is basically constant, and there is a set of adjustment mechanism, and it will not become acidic due to eating more acidic foods, nor will it make the body alkaline due to eating more alkaline foods. Therefore, the incidence of acne has nothing to do with the acidity and alkalinity of the body.

Li Daning said that the most common acne is what people call "acne", which is mainly caused by adolescents aged 12-19 years old. Some people can be 25 years old. This is normal; acne is not complete. Due to the age limit, some people are still sending after 35 years old and 40 years old. It is abnormal.

The pathogenesis of acne recognized by modern medicine, popularly speaking, has a "trilogy": the first step, the increase of androgen secretion - which is very significant during the development of adolescents - androgen stimulates the hyperplasia of sebaceous glands, leading to increased sebum secretion; In the second step, after a large amount of sebum is secreted, it needs to pass through the hair follicle sebaceous gland duct. At this time, the catheter also has lesions and the caliber becomes smaller, which leads to obstruction of sebum secretion. In the third step, the sebum can not be blocked in the mouth of the hair follicle catheter, causing hemorrhoids. Bacilli infection, the formation of acne.

Li Daning said that endocrine changes periodically within a day. Nowadays, many white-collar workers are used to staying up late, leading to endocrine changes and even disorders, and easy to develop acne; some white-collar workers have more entertainment, improper diet, too much oily, and will increase sebum secretion. He suggested that white-collar workers who often have adult acne can go to the hospital to check, what factors cause the androgen secretion to increase. "There may be abnormalities in the endocrine system in the body, or it may be taking certain hormonal drugs (such as prednisone), you need to check the cause." Li Daning said.

[Hot text playback] Apple chips can kill acne in the cradle?

Miss Xu’s friends are also suffering from “acne”, and they often share some “acne remedies” with each other. The remedies collected by Miss Xu are:

20 tablets of metronidazole, 20 tablets of virus spirit, 1 tube of Shunfengkang pill, 1 bottle of green ointment. The tablets are crushed and mixed into the ointment. Apply to your face before going to bed at night, wash away in the morning;

One fresh lemon peel, 20 raisins, one foot long sugar cane (can be cut into several small pieces), and ten pieces of licorice tablets. Put the four together and add four bowls of water to a bowl of water. Take three consecutive days; one spoonful of salt and half a spoonful of white vinegar. Dissolve salt and white vinegar in boiling water in half a cup of boiling water. After washing your face, apply a cotton swab to the acne. You can also wipe it all over your face and wash it with water.

Wash the potatoes and cut into thin slices. Stick them on the face for about 15 minutes and then remove them. A female white-collar worker who shared this party said that this method can "small and lighter acne in the cradle", but the effect on large acne is not obvious;

Cut the fresh apple into thin slices and pour the boiling water on an apple and wait a few minutes until the apple slices are soft. Remove it from the water and stick it to the acne when it is cooled to warm. Leave it for 20 minutes, then remove it and clean the face with water. A female white-collar worker said that when the acne on the face was just issued, this method can make the acne mature quickly without leaving acne marks.

[Expert comment] Most "acne remedies" are actually placebos

Li Daning said that some remedies have certain rationality, but many "acne remedies" are actually placebos.

For example, metronidazole can kill acne bacteria, which can play a certain role in acne; virus spirit is useless; "green ointment" is mainly composed of lincomycin, and lincomycin is also used in hospitals to treat acne. However, lincomycin and metronidazole do not need to be mixed together, and a single use will also play a role. Chinese medicine believes that "lung main fur" can treat hemorrhoids by moistening the lungs. Therefore, such drugs for moistening lungs such as licorice tablets may have an effect on acne. Fresh lemon contains a lot of vitamin C, which can play a role in skin care and health care, but it can not directly treat acne.

From the perspective of the pathogenesis of acne, external application of potato chips and apple slices has no acne effect, and there is no such statement in professional medical books. “Many people want to stick apple slices and paste cucumber slices, hoping to add vitamin C to the skin, but the skin will hardly absorb it,” said Li Daning. “As long as the ingredients are harmless, there is no harm in using these remedies. effect."

Li Daning suggested that female white-collar workers who are often troubled by acne should not be too concerned, but at the same time pay attention to improving their living habits. First of all, to ensure that the skin is clean, so that the sebaceous gland outlet is kept smooth, it is best to wash your face with warm water, skin oily people can use a strong facial soap or facial cleanser, while also washing off a little acne bacteria to prevent pore blockage; The diet must be light, eat less oily foods, eat more vegetables and fruits; third, regular work, especially to ensure good sleep, so that the endocrine system remains normal; fourth, do not use the acne already issued Squeeze your hands to prevent infection and leave scars. If it is really bad, it is recommended to seek medical advice in time for the doctor to take care of the medicine.