What is “age spots”?

What is “age spots”? Human skin, especially exposed parts, is often exposed to sunlight, especially ultraviolet rays, and it is easy to enter the aging process earlier than other parts. As time goes by, the degree of aging will become more prominent. This is called photo-aging. It is generally considered that 25 years old is a symbolic age, and most people begin to age naturally at this age. However, the exposed and non-sunscreen parts cause the skin to age earlier (earlier than 25 years old) due to the combined effects of natural aging and photoaging. Skin aging is currently divided into four types: | Early aging: no obvious wrinkles, slight pigmentation may occur. Type II early and mid-term aging: red blood streaks can be seen, the skin is no longer delicate, skin keratosis can be touched, there may be age spots and fine lines, wrinkles can be seen when facial muscles are exercised. Type Ⅲ and type Ⅳ late aging: there are obvious age spots, skin keratosis, red blood streaks and wrinkles. When you get old, your skin will no longer be delicate, smooth, and wrinkled. The physiological aging of normal people’s skin, as well as the photoaging caused by long-term sunlight, will cause such changes in your skin. There are mainly two kinds of “spots” on the face after skin aging, one is brown and flat, which is what we most commonly call age spots, professionally called age-related freckle or solar freckle. There is also a kind of brown, slightly higher than the skin, and a little rough to the touch. It is called senile warts, also known as seborrheic keratosis. Some seborrheic keratosis is also flat and patchy. The second type is very easy to cure, cold east or CO2 laser can solve it, the effect is very good and it is very cheap. The first type of spot is a bit more difficult. This difficult point is that the treatment effect varies from person to person, and laser treatment is often used. When you are old, sometimes your skin will turn pale. You may see a lot of small round white spots on the body, uniform and uniform from rice grains to mung bean size. Some friends think this is vitiligo, so they rush to the hospital to see a doctor. In fact, don’t be nervous. This is called senile leukoplakia, which is a manifestation of skin aging and cannot be cured, but there is no need to worry about it growing up or growing on the face. When you are old, red moles will appear on your body. The red nevi here refers to senile hemangioma, small red bulging bumps. Don’t worry, it is benign. Because the wall of this hemangioma is relatively thick, there is generally no need to worry about it breaking. Leave it alone, it’s okay. When you are old, there may be many small yellow bumps on your face. Approximately the size of a grain of rice, it is called senile sebaceous hyperplasia, because the surface color is close to normal skin color, so don’t care about it.

What is chicken skin? What is the cause of chicken skin?

Chicken skin is actually called keratosis pilaris, which is a hereditary skin disease, which is mainly caused by keratosis of hair follicles and has a great relationship with fat metabolism. Generally fatter people are more likely to have this condition. Keratosis pilaris has no effect on life except for its appearance. Keratosis pilaris, also called lichen hair, is a very common disease in the population. According to statistics, 80% of people suffer from this disease, but the average person has only a few of them, which is not easy to find. . Keratosis pilaris is neither painful nor itchy, and it does not produce lesions. It usually occurs in people from adolescence to 40 years old, and then it will gradually subside with the growth of age, but the most frequent period is also the most unexpected stage. What is the cause of keratosis pilaris? (1) This is a hereditary skin disease. It is due to keratosis of the hair follicles, which affects the growth of hair, so the surface of the skin is not smooth to the touch, like goose bumps, and indeed there is a curly hair in every small papule. There is no cure for this disease, but the proper application of some drugs can improve the condition. (2) From the perspective of traditional Chinese medicine, keratosis pilaris is mainly caused by stagnation of liver qi, liver mucification, and weakness of the spleen and stomach. As we all know, the spleen and stomach are the foundation of the acquired nature, and the weakness of the spleen and stomach will inevitably lead to skin dystrophy and eventually cause this disease. (3) This disease is a dominant inheritance caused by the mutation of the 12th pair of chromosomes in the human body. In addition, the symptoms that occur are also related to thyroid insufficiency and vitamin A deficiency. Because of the keratosis at the opening of the hair follicle sebaceous duct, the so-called “corner plug” is formed, and after hardening, the pores will be blocked. The appearance of small pimples like pinpoints, scattered distribution, the color is skin, reddish brown or brown, most of the rashes are not itchy. The appearance is very similar to “goose bumps”, thick and sand-like, it is rough to the touch and looks more eye-catching, but goose bumps are caused by the contraction of the erector hair muscles due to climate, emotions, etc., which is a temporary skin Change. The papules formed by pore keratosis injection are a continuous state. If you want to know more about “chicken skin treatment”, you can ask me questions.

What is chicken skin? What is the cause of chicken skin?

Chicken skin is actually called keratosis pilaris, which is a hereditary skin disease, which is mainly caused by keratosis of hair follicles and has a great relationship with fat metabolism. Generally fatter people are more likely to have this condition. Keratosis pilaris has no effect on life except for its appearance. Keratosis pilaris, also called lichen hair, is a very common disease in the population. According to statistics, 80% of people suffer from this disease, but the average person has only a few of them, which is not easy to find. . Keratosis pilaris is neither painful nor itchy, and it does not produce lesions. It usually occurs in people from adolescence to 40 years old, and then it will gradually subside with the growth of age, but the most frequent period is also the most unexpected stage. What is the cause of keratosis pilaris? (1) This is a hereditary skin disease. It is due to keratosis of the hair follicles, which affects the growth of hair, so the surface of the skin is not smooth to the touch, like goose bumps, and indeed there is a curly hair in every small papule. There is no cure for this disease, but the proper application of some drugs can improve the condition. (2) From the perspective of traditional Chinese medicine, keratosis pilaris is mainly caused by stagnation of liver qi, liver mucification, and weakness of the spleen and stomach. As we all know, the spleen and stomach are the foundation of the acquired nature, and the weakness of the spleen and stomach will inevitably lead to skin dystrophy and eventually cause this disease. (3) This disease is a dominant inheritance caused by the mutation of the 12th pair of chromosomes in the human body. In addition, the symptoms that occur are also related to thyroid insufficiency and vitamin A deficiency. Because of the keratosis at the opening of the hair follicle sebaceous duct, the so-called “corner plug” is formed, and after hardening, the pores will be blocked. The appearance of small pimples like pinpoints, scattered distribution, the color is skin, reddish brown or brown, most of the rashes are not itchy. The appearance is very similar to “goose bumps”, thick and sand-like, it is rough to the touch and looks more eye-catching, but goose bumps are caused by the contraction of the erector hair muscles due to climate, emotions, etc., which is a temporary skin Change. The papules formed by pore keratosis injection are a continuous state. If you want to know more about “chicken skin treatment”, you can ask me questions.

What is chicken skin? What is the cause of chicken skin?

Chicken skin is actually called keratosis pilaris, which is a hereditary skin disease, which is mainly caused by keratosis of hair follicles and has a great relationship with fat metabolism. Generally fatter people are more likely to have this condition. Keratosis pilaris has no effect on life except for its appearance. Keratosis pilaris, also called lichen hair, is a very common disease in the population. According to statistics, 80% of people suffer from this disease, but the average person has only a few of them, which is not easy to find. . Keratosis pilaris is neither painful nor itchy, and it does not produce lesions. It usually occurs in people from adolescence to 40 years old, and then it will gradually subside with the growth of age, but the most frequent period is also the most unexpected stage. What is the cause of keratosis pilaris? (1) This is a hereditary skin disease. It is due to keratosis of the hair follicles, which affects the growth of hair, so the surface of the skin is not smooth to the touch, like goose bumps, and indeed there is a curly hair in every small papule. There is no cure for this disease, but the proper application of some drugs can improve the condition. (2) From the perspective of traditional Chinese medicine, keratosis pilaris is mainly caused by stagnation of liver qi, liver mucification, and weakness of the spleen and stomach. As we all know, the spleen and stomach are the foundation of the acquired nature, and the weakness of the spleen and stomach will inevitably lead to skin dystrophy and eventually cause this disease. (3) This disease is a dominant inheritance caused by the mutation of the 12th pair of chromosomes in the human body. In addition, the symptoms that occur are also related to thyroid insufficiency and vitamin A deficiency. Because of the keratosis at the opening of the hair follicle sebaceous duct, the so-called “corner plug” is formed, and after hardening, the pores will be blocked. The appearance of small pimples like pinpoints, scattered distribution, the color is skin, reddish brown or brown, most of the rashes are not itchy. The appearance is very similar to “goose bumps”, thick and sand-like, it is rough to the touch and looks more eye-catching, but goose bumps are caused by the contraction of the erector hair muscles due to climate, emotions, etc., which is a temporary skin Change. The papules formed by pore keratosis injection are a continuous state. If you want to know more about “chicken skin treatment”, you can ask me questions.

Solar keratosis is a precancerous lesion, not a senile wart

Summer is coming to an end, do you have a good sunscreen? ? ? Believe that through our previous science popularization-applying sunscreen every day, why are you still tanned? Everyone has a good idea about sun protection. Sunlight has a huge impact on our skin. In addition to tanning, it can also induce various skin diseases and even skin cancer. We can see this rash on the faces of many elderly people. Many people think it is “age spots” and relax their vigilance. But in fact, we need to face its existence, because it is likely to be a common precancerous lesion. This disease is called solar keratosis, also known as light keratosis or senile keratosis. Regarding the occurrence of the disease, the first consideration is the close relationship with sunlight. This disease is more common in places with strong ultraviolet rays, and it often appears on areas exposed to sunlight, such as the face, ears, neck, lower lip, back of hands, and forearms. In the early days, it was a bit similar to the “old man warts” we often referred to. They were protruding skin color or light red small papules, small nodules, or erythema and telangiectasia. It is round or irregular, with hard texture, and some scales are visible on it. Slowly, the surface becomes yellowish-brown or dark-brown, the surface is dry and not easy to peel off. If it is peeled off forcibly, there will be bleeding. If there are erosions, ulcers, bleeding, etc., beware of cancer. And what we often call “senile warts”, medically called seborrheic keratosis, is a common benign skin tumor. It has a similar name to solar keratosis, and the long one is a bit similar. The two can happen at the same time. It is usually brown papules or plaques, and some flat papules have small granular papules on top. Professor Zhou Maoheng of Huashan Hospital calls them “hills”. The surface can have greasy scales that can be easily peeled off, but it does not bleed and will regenerate soon. In addition to common exposed areas, other parts of the body will also grow. When we are stupid and confused, it is still recommended to go to the hospital for a diagnosis by a professional doctor. Through the nature, location and dermoscopy of the skin lesions, distinguish it from discoid lupus erythematosus and seborrheic keratosis. Pathologically, attention should be paid to the differentiation of skin carcinoma in situ (Bowwen disease), follicular keratosis, and arsenic keratosis. For the treatment of this disease, you can choose laser, freezing, photodynamic therapy and other methods, and closely observe. If cancer is possible, surgical resection is recommended. Although appearance may not be so important when people are getting older, healthy skin still needs attention. END Wang Yin is an attending TCM physician in Jiashan First Hospital of Zhejiang Province. He graduated from Tianjin University of Traditional Chinese Medicine. He started to work in the Department of Dermatology and Venereology in 2009. He has rich clinical experience in diagnosis and treatment of various common skin diseases, based on conventional Chinese and Western medicines. He is good at treating difficult cases such as acupuncture and thread embedding, especially for eczema, acne, obesity, etc. He has self-insights and treatment methods, and often achieves good clinical effects. Zhu Mingang, Chief Physician of Dermatology Department, Attending Physician of Zhejiang Medical Beauty, 2016 Excellent Dermatologist of Zhejiang Province. He has been engaged in skin and venereal diseases for more than 20 years, and has accumulated rich clinical experience and theoretical knowledge. In addition to proficiency in the diagnosis and treatment of common diseases in dermatology, in recent years, allergic skin diseases and facial skin diseases that affect beauty have been focused and explored. Expert outpatient time: Jiashan No. 1 Hospital Tuesday morning (allergic skin disease), Thursday afternoon (cosmetic dermatology) Thank you for your trust in me, I will try my best to help you with my professional knowledge. Scientific skin care and rational use of drugs, let us use patience and trust to promote health and care for beauty! Hobbies: travel, casual photography and all beautiful things! Overlooking Luojia Mountain for more skincare science, welcome to pay attention to “Skincare in Xitang”

Treatment of athlete’s foot

The photo comes from a 12-year-old child in my dermatology clinic. He is fat and has a one-month onset period. Athlete’s foot, commonly known as “beriberi”, is caused by fungal skin infections. The main pathogen is Trichophyton rubrum, which accounts for more than 50%. Classification: There are three clinical types: blisters, intertrivial erosion, and scaly keratosis. Different types of fungi can cause different types of tinea pedis: the vesicular type is mostly caused by Trichophyton mentagrophytes infection; the rubbing erosion type is mainly caused by the infection of Trichophyton rubrum, Trichophyton mentagrophytes, and epidermophyton flocculent; scales Most of the keratinizing type is caused by Trichophyton rubrum, a few are caused by epidermophyton flocculent. Treatment: mainly antifungal drug therapy, generally external drug therapy, choose different dosage forms according to the type of skin lesions, can not use ointment for all types of athlete’s foot, severe type combined with oral and external drug treatment, accompanied by bacterial infections Antimicrobial treatment. Selection of external dosage forms: 1. For blister type, choose solution 2. For interdigital type, use powder first, then cream. 3. Use cream or ointment for scaly keratosis type. Treatment: generally at least four weeks. &nbsp.&nbsp.

How to improve “chicken skin”? Can it be cured?

&nbsp.&nbsp.&nbsp. Many people have dark red or light brown spots on the skin of their arms and thighs, which are not painful or itchy, and feel rough and grainy, just like chicken skin. &nbsp.&nbsp.&nbsp.&nbsp.This kind of chicken skin is exactly “perikeratosis pilaris”, also called “lichen pilaris”. Because there is a keratin plug on the top of the small papules, there is a curly hair in it, which makes many people mistakenly think it is. For acne or acne, just squeeze or scratch it with your hands. The result will be inflammation and pigmentation, so you must be screened. &nbsp.&nbsp.&nbsp.&nbsp. The etiology of keratosis pilaris is unknown. It has a great relationship with fat metabolism. The main manifestation is the keratosis of the hair follicle. Excessive keratin affects the growth of body hair. &nbsp.&nbsp.&nbsp.&nbsp. There is no impact on health, only one impact on life, which is not good. &nbsp.&nbsp.&nbsp.&nbsp.1, family inheritance: keratosis pilaris is a hereditary skin disease, the probability of inheritance is relatively high;&nbsp.&nbsp.&nbsp.&nbsp.2, incidence of dry skin from childhood to adolescence Highest;&nbsp.&nbsp.&nbsp.&nbsp.3, fatter people are more likely to appear;&nbsp.&nbsp.&nbsp.&nbsp.4, keratosis pilaris is light in summer and heavy in winter, dry air, low environmental humidity, lack of skin Moisture is also easy to appear. &nbsp.&nbsp.&nbsp.&nbsp. Currently there is no cure, you can use the following methods to ease the improvement:&nbsp.&nbsp.&nbsp.&nbsp.1, a relatively quick and effective method of improvement: fruit acid peeling. &nbsp.&nbsp.&nbsp.&nbsp. Fruit acid is a commonly used treatment method in dermatology. It is mainly a variety of natural acids extracted from natural fruits and vegetables, such as glycolic acid extracted from sugar cane and tartaric acid extracted from grapes. Wait. &nbsp.&nbsp.&nbsp.&nbsp.Therapeutic principle: The treatment of keratosis pilaris with fruit acid is to apply a specific concentration of fruit acid to the affected area. The fruit acid can destroy the connection between the stratum corneum cells and dissolve the keratin and the keratin plug of the hair follicle mouth. , Improve oil secretion, promote cell metabolism, can alleviate and improve the symptoms of keratosis pilaris, and the skin will become white and delicate. 3-5 times will have a good effect. Skin protection ability is relatively weak after AHA treatment, so pay attention to moisturizing and sun protection! &nbsp.&nbsp.&nbsp.&nbsp.2, topical medicine:&nbsp.&nbsp.&nbsp.&nbsp. Under the guidance of a doctor, some ointments can be used, such as 5% salicylic acid ointment, urea ointment, vitamin E ointment, tretinoin Cream etc. &nbsp.&nbsp.&nbsp.&nbsp.3. Daily care:&nbsp.&nbsp.&nbsp.&nbsp.①The keratosis pilaris skin is relatively dry, so stick to applying moisturizer every day;&nbsp.&nbsp.&nbsp.&nbsp.②Avoid using it. Soaps and irritating products that make the skin dry, avoid rubbing the skin;&nbsp.&nbsp.&nbsp.&nbsp.③Avoid frequent exfoliation. The skin metabolism cycle is about 28 days. Normally, it is enough to go once or twice a month. Excessiveness may aggravate keratosis pilaris;&nbsp.&nbsp.&nbsp.&nbsp.④In your daily diet, eat more vegetables and grains. &nbsp.&nbsp.&nbsp.&nbsp.The improvement of keratosis pilaris is relatively slow, so patience and perseverance are required to have an ideal effect. &nbsp.&nbsp.&nbsp.&nbsp.For more information about “skin care”, you can ask me questions.

Why the acne always grows on the chin

After puberty, many friends still have acne raging, and they mostly grow in the jaw. What is the actual cause? In fact, acne in adulthood is no longer called acne. We call it late-onset acne or nodular cystic acne. Acne at this time mostly occurs in the deep part of the hair follicle, and the inflammation is relatively serious. The reasons for it are related to the following aspects: 1. The reason why stress anxiety is called stress acne is not caused solely by hormones in the body. It is related to the emotions that make one feel nervous, bored, and unhappy in daily life, because people are in such an unhappy state most of the time, and the body will secrete corresponding inhibitory neurotransmitters, which will lead to the immune function of our body. Decrease will also disturb the natural metabolic internal environment of the skin, so the resistance to bacteria becomes low and it is likely to cause inflammation. 2. High secretion of sebaceous glands, high androgen performance after puberty, especially when girls have strong oil secretion, constant acne, enlarged hair follicles and other high androgen performance, gynecological color Doppler ultrasound and six female hormones should be checked to eliminate Polycystic ovary syndrome, because people with this syndrome, acne will not be easily cured. When we are a wolf, in addition to the conventional treatment of file sores, we must also give corresponding estrogen therapy to comprehensively treat the symptoms. 3. Abnormal keratosis of the hair follicle sebaceous duct. For people with acne-prone constitution, abnormal keratosis often occurs in the hair follicle sebaceous duct. Blackheads or whiteheads are easy to form, because free fatty acids in the body will stimulate the inflammation of the hair follicle wall, and at the same time stimulate the sebaceous ducts, epithelial hyperplasia and keratinization, which will hinder sebum secretion and excretion. Sometimes it is easy to cause the low-molecular-weight thank peptide to produce hydrolase and form an inflammatory reaction, which causes the redness, heat and pain symptoms of acne. 4. Dyspepsia is a dialectic of acne in traditional Chinese medicine: lung and stomach blood heat, which can be manifested as cough, yellow sputum, fever, and stomach fullness, red tongue, yellow greasy coating and other symptoms. At the same time, it can show that the tongue coating is yellow and greasy, and the body is heavy, and may be accompanied by corresponding clinical symptoms such as diarrhea. This shows that acne patients also have symptoms such as indigestion. Indeed, the intestinal flora of acne patients is unbalanced, and they are prone to digestive system problems, such as constipation, chronic diarrhea, hyperacidity, ulcers, etc., which can cause toxins to accumulate in the body and waste products cannot be discharged normally. At this time, the reflection part of the digestive system-around the mouth, so acne often appears around the mouth. 5. Poor living habits People who have been in a stressful state for a long time do not have a good sleep quality, or are in a sub-healthy state, coupled with smoking and drinking, make acne worse. If you do not pay attention to the hygiene of your hair and collar, you are used to lifting your cheeks and picking your face, not thoroughly removing makeup, washing your face, etc., it will also induce acne. How to deal with nodular cystic acne? 1. Life conditioning is always the rule of three and seven. Go to bed earlier and maintain a happy and reasonable diet. This is the basic policy for treating acne. Eat low-glycemic index foods and avoid whole-fat or skimmed milk. At the same time, probiotics can be taken orally to regulate the intestinal flora. 2. Avoid squeezing and squeezing will not eliminate inflammation, but can only spread inflammation to the deeper direction of the hair follicle. Depressed scars or hyperplastic scars will be heavier. 3. Timely anti-inflammatory If severe acne appears, it is necessary to eliminate inflammation in time. This is the best solution to prevent acne marks and scars. There are many ways to reduce inflammation of acne. You can use the external brush with fruit acid, red and blue light, or take it in combination with oral medicine. The key is to ask a professional doctor for a face-to-face consultation before making a specific plan. 4. Photodynamic therapy for refractory nodular cystic acne. Photodynamic therapy can be used, which can not only effectively eliminate inflammation, but also make the skin recover better and prevent the recurrence of acne.

Fruit acid rejuvenation, giving the skin a chance to regenerate-Hangzhou Shiguang

&nbsp.&nbsp.&nbsp.Why is your skin always troubled by these problems?    The normal metabolism of the skin is 28 days, but with time and environmental changes, the metabolism will slow down, and the renewal will be slow. It is easy to accumulate pigment and aging keratin, resulting in fine lines. The accumulation of pigment makes the skin dark and dull. The aging keratin cannot be renewed and peeled off in time, and it will clog the pores and cause acne and acne. Various skin problems will follow one after another. RE-fruit acid rejuvenation effectively fights skin problems. What is AHA?    AHA is actually extracted from fruit alpha-hydroxy acid (AHA). It is named after Cleopatra more than 2000 years ago. Wine is used to care for the skin. For nearly a thousand years, winemakers in French wine estates have also maintained the habit of wiping the skin with grape juice, which can maintain the skin’s youthfulness, fineness and smoothness.  RE-fruit acid skin rejuvenation is the use of fruit acid to treat and remove the excessively keratinized stratum corneum, help repair damaged outer skin, and stimulate skin growth. The treatment has been applied in the beauty industry for more than 40 years. With the continuous improvement of products and the accumulation of clinical application experience, in recent years, due to its definite curative effect in skin beauty and treatment of keratotic skin diseases, it is not good. The response is small, so it is getting more and more attention from clinical skin and beauty doctors. Hangzhou Shiguang Fruit Acid Skin Rejuvenation is suitable for:    1. Pigmented skin problems: chloasma, post-inflammation pigmentation, melanosis.     2. Skin aging problems: fine lines, dull skin tone, large pores.    3. Keratotic skin Problems: keratosis pilaris, acne, seborrheic keratosis. The effect of Hangzhou Shiguang Fruit Acid Skin Rejuvenation:   1. Strong antioxidant, promote skin metabolism.   2. Promote the aging of the outer stratum corneum, dissolve the keratin plug.   3. Promote the skin’s absorption of moisture.   4. Strong whitening , Lighten the pigment.    5. Promote the synthesis of collagen and hyaluronic acid. Different medical AHAs come from better plastic surgery hospitals for skin rejuvenation. Choose professional medical institutions and professional skin beauty experts to scientifically match the concentration of AHAs, which is especially important! Safety effects can be guaranteed!   TIPS : After 1-2 days after fruit sour rejuvenation, the local area will be slightly red and painful. Scabs or desquamation may occur in 3-7 days. This is normal. Do not rub or pick with your hands, let it fall off naturally OK. Strictly do a good job of moisturizing and sun protection. Apply a moisturizing mask 1-2 times a day for a week, sunscreen plus mask, hat and other physical sun protection.

Does genetics affect the skin?

Does genetics affect the skin? We know that black couples will not give birth to white or yellow people, and white couples will not give birth to black or yellow people. This is the effect of genetics on skin color. Similarly, the skin’s skin quality and aging are also related to heredity. Many skin diseases are also related to genetic factors. Such as ichthyosis, psoriasis, follicular keratosis, freckles, etc., hereditary skin diseases have the following four inheritance methods: 1. Autosomal dominant genetic characteristics are: The incidence of illness is 50%. Autosomal dominant hereditary skin diseases account for about 70% of transmitted skin diseases. Common ones are: freckles, ichthyosis vulgaris, hair follicle keratosis, familial chronic benign pemphigus, pityriasis hair, simplex Bullous epidermolysis, pigment incontinence, sweat tube keratosis, etc. 2. Autosomal recessive inheritance characteristics are: parents do not necessarily get sick, but they are all carriers of disease genes (heterozygous), about 1/4 of the patients’ siblings are sick, men and women The chances of getting sick are equal. Common ones include: albinism, congenital ichthyosis, pigmented dry skin disease, congenital porphyria, etc. 3. Sexual inheritance is characterized by intergenerational inheritance, all sons born to female patients are ill, and the father of female patients is symptomatic. Common are: hereditary ichthyosis, congenital keratosis, diffuse body angiokeratoma, atrophic pore keratosis and so on. 4. The multi-gene inheritance characteristics are: The genetic characteristics are not determined by a pair of genes, but the inheritance method determined by several pairs of genes, which is greatly affected by environmental factors. Common are: seborrheic dermatitis, acne vulgaris, lupus erythematosus, psoriasis, hirsutism, alopecia areata, vitiligo and so on. Such diseases mostly occur on the face, which is destructive and causes great psychological trauma to patients. & nbsp. & nbsp.