1. Studies have shown that, whether it is a Jacob laser or a carbon dioxide laser, new collagen production can be increased within 6 weeks after treatment. wrong! Traditional beauty practitioners believe that bloodshot on the face means that the skin is too thin and even the blood vessels can be seen. In fact, the real problem is that the circulation of the face is abnormal and abnormal blood vessels appear. The laser needs to penetrate the skin to destroy these. The blood vessels can achieve the therapeutic effect, and the statement that the skin is too thin to be loaded is simply a matter for chickens and ducks.

2. The wound has been red after the laser shot, but you can’t hit it directly to get rid of the red. wrong! The redness after laser is a normal repair process, as long as the sun protection is good, unless it is abnormal and lasting redness, it is not necessary to do more.

3. Hemangiomas will disappear anyway, so you don’t need to rush into laser. wrong! Not all hemangiomas will disappear when they grow up, and some will grow larger and even cause limb distortion. Ask a dermatologist to evaluate and decide the best treatment time without causing regret.

4. There are a lot of varicose veins on the leg. The doctor suggested that I wear elastic socks. I am afraid of heat and pain. I want to use laser to kill them. wrong! Even when receiving laser or injection treatment, wearing elastic socks is still the most basic requirement, otherwise the small blood vessels will be removed and the problem of poor circulation will not be resolved, and it will come again after treatment.

5. The problem of distiller’s grains on my face has been bothering me. I want to find time to deal with it once with laser. wrong! The problem of distiller’s grains is not only solved by laser. Correct medication and changes in living habits are also important. Laser can only be used as a method of treatment, not a cure.

6. Crab foot swollen shot many times and then recurred, I want to try the laser, I heard that it is more effective. wrong! The benefits of vascular laser for the treatment of crab foot swelling are convenience and less pain, but the frequency of recurrence is not relatively low, and the effect of treatment is not necessarily better.

Vascular laser-the principle of vascular laser

Laser spot removal-Questions about laser spot removal

1. How to reduce pain after laser? There will be a short stinging after the laser treatment of the spots. Such stinging lasts for about 30 minutes, and an appropriate amount of ice or analgesics can alleviate such pain.

2. Can I wash my face normally after laser? After treatment, the skin can and needs to be cleaned normally. Some doctors will tell patients not to wash their face after laser. This is a very outdated and wrong idea. Normal skin will also secrete oil and sweat, plus sebaceous glands and aging keratin metabolites, environmental pollution and original contact. There are colonies on the skin. Do you think it will be cleaner than proper cleaning without washing? What’s more, the wound itself has secretions and necrotic tissue, and it is also a breeding ground for bacteria. Keeping the wound clean is the most important factor for good skin care, so patients can wash it gently with a mild cleansing soap and then apply the ointment prescribed by the doctor.

3. Do laser wounds require special maintenance? Many commercial places will want you to consume some laser products as well as some consumable products, but in fact, the wound needs a quiet repair, not more stimulation. Generally prescribed ointments are professional formulas that have undergone aseptic processing, but most of the maintenance products are not aseptically processed with drugs. These complex formulas should not be used within a few days after treatmet to avoid increasing the chance of allergies and infections.

4. How to protect against sun after laser? After the laser treatment, the sun protection measures are the most important work. After treatment, the skin is in a repairing state. At this time, the skin is very sensitive to ultraviolet rays in the sun, even on cloudy days or indoor windows or in the car. Sun protection can not be less effective. Strict sun protection work should be combined with sunscreen and sun hats or umbrellas. Spotted skin should always be sun protected at all times, not just after laser. In fact, sun protection is considered as a habit. Trouble in imagination.

Laser spot removal—the principle of laser spot removal

The dark spots in the skin are actually abnormal melanin accumulation in the skin. These accumulated melanin may be distributed at the epidermal layer, the junction of the epidermal layer and the dermal layer, or the dermal layer. The problem of using laser light to treat dark spots is to use laser to selectively destroy these abnormally accumulated melanin.

Selective absorption

A single wavelength of laser light can be selectively absorbed by different targets in the skin. Using a laser light source specific to melanin to destroy dark spots, melanin can be selectively destroyed without damaging surrounding normal skin tissue. . The principle of laser damage is to use the thermal damage in the photothermal reaction and the shock wave effect. Because the laser light has a short excitation time, these melanins will be destroyed by absorbing the extremely high energy of the laser light in an instant, because the wavelength of the laser light is specifically First, the subject matter that can be absorbed is also specific. The instantaneous energy of the pigment laser will accumulate in the target in a very short time. This instantaneous time is very short, and the energy is too short to reach the surrounding tissues, so we can selectively destroy the unwanted melanin and reach us. The effect of the treatment does not hurt the surrounding skin.

Choice of wavelength and time

The heat conduction time of each component in the skin is different, while the heat conduction time of melanin is only about one microsecond, and the excitation time of pigment laser can be controlled to be shorter than this short time. Under the electron microscope, it can be found that after the laser treatment, these melanins are selectively destroyed, and the surrounding tissues are still intact. This is the basic logic and principle of laser treatment. This concept was first proposed by Dr. Goldman around 1960. The earliest used speckle-removing laser was a general ruby laser, and later such applications were also extended to XeF Excimer laser, Q-switched ruby laser, and Q-switched ya Each laser, Q-switched Alexander laser and pulsed dye laser.

Combination of vaporized laser and pigmented laser

Laser Mole-Misconceptions about Laser Mole

Carbon Laser Introduction

1.The principle of Carbon laser

The principle of the Carbon laser is to use the carbon powder applied to the face by the Jacob laser to achieve the effect of heating the carbon by the photothermal effect. These carbons often accumulate around the pores and the depression of the skin, so local high temperature has Additive effect. This principle was originally applied to hair removal lasers, but the actual hair removal effect is not ideal.

2.The effect of Carbon laser

The size of the hair follicle opening varies from person to person, and it is related to the amount of oil produced by the congenital constitution, that is, to the activity of the sebaceous glands and the size of the glands. The thermal effect of the skin when receiving the laser is the destruction principle of the photothermal reaction during the treatment, while the thermal effect of the carbon laser is the indirect effect of the heat conduction caused by the heating of the carbon. The pores receive energy indirectly during the heating process. Rather than directly coming from the interaction between laser and biological tissues, there is no substantial correlation with the single-wavelength, co-directional, precise and high-energy characteristics of lasers. The long-term effect of pore opening heating can actually change the structure of the hair follicle and the size of the opening is also questionable. The destructive effects of indirect heating of the skin are neither selective nor derived from indirect energy, nor are they precise. Any additional effects such as spots, keratin, etc. removed during this period can only be summarized as hot skin renewal effects.

3. Reaction after laser

During the treatment, there will be a tingling sensation caused by instant heating. The reactions of the skin after heating are redness, swelling, protein degeneration, coagulation, and necrosis. During the second and third stages of repair, there will be new collagen and fibrosis to produce a firming effect, but the actual temperature of the toner laser is mostly only in the first stage. It is known that the size of the pores involves the deep structure, the formation of pits involves the lack of tissue, and the effect of skin heating should only be used as an auxiliary tool to improve related problems.

KTP Laser Introduction

Nd-YAG Laser Introduction

Er-YAG Laser Introduction

Argon Laser Introduction

Ruby Laser Introduction

Laser wavelength type

Tissue response after laser

Laser characteristics

Relationship between estrogen and skin spots (liver spots / chloasma)

70% of our customers come for laser treatment of liver spots / chloasma / butterfly spots. Through the combination of various laser therapies, we have achieved very successful and satisfactory results. Through treatment, 80-95% of the annoying stubborn hormone pigmentation can be removed, and every guest who walks out of our clinic will regain confidence and show a heartfelt smile. The accumulation of melanin is the direct reason that affects the whiteness of the skin, including the tanning of the skin or the formation of skin spots are the result of the formation of melanin in the skin. There are many whitening products on the market, and whitening is also the most popular skin care purpose for consumers. Liver spots are a common skin spot in Orientals, and they are usually not very fast in the treatment effect. Most beautiful women probably know that the formation of liver spots is quite related to female hormones, so even if you get Good treatment, still has a high chance of recurrence. However, if you want to maintain skin whitening, you must make the skin spots as small as possible. Therefore, the treatment of liver spots is definitely closely related to skin whitening. Therefore, I want to tell you why the liver spots have such a high recurrence. rate? How to reduce the regeneration of liver spots? Human skin color is determined by the type and amount of melanin distribution. Generally speaking, it can be divided into four major ethnic groups. The first is the Caucasian race, the second is the Asian race, and the third is the Hispanic race. The fourth is black Africans. In addition to determining skin color, the most important physiological role of melanin in human skin is to prevent ultraviolet rays in the sun from damaging skin tissues, including the formation of aging skin and canceration of skin cells. Skin melanocyte cancer is closely related to the abnormal proliferation of melanin, so the United States attaches great importance to the research on the formation of skin melanin. According to statistics from the United States, skin cancer accounts for nearly 50% of all newly discovered cancer cases, and melanoma of the skin accounts for about 85% of skin cancer deaths. It is an American male Cancer is the sixth leading cause of death, while women rank seventh. The formation of melanin in our skin is the result of a series of physiological reactions. Current research has penetrated into the genetic level of cells. The main types of skin cells involved in the skin include fibroblasts in the dermis, keratinocytes in the epidermis, and melanocytes. The internal and external changes of any micro cells will affect the regulation of melanin production. Of course, in the development and use of whitening ingredients and the treatment of skin whitening (including laser treatment of skin spots), it is also necessary to have a deep understanding of the causes and effects of melanin formation, so that it can be achieved under the premise of safety and health good effect. The above chart shows the direct factors that affect melanin production. These factors are activated by the skin’s keratinocytes. When keratinocytes are stimulated by external causes (such as ultraviolet rays, drugs, heavy metals, and other environmental factors), they are released. Use the above factors to promote the production of melanin. As you can see from the chart, the formation of melanin is really very complicated. Of course, these complex processes are not what we need to know, but for the internal and external factors that will increase melanin, you need to be a little clearer because these The factor is the reason that affects the whiteness of the skin. Liver spot is a very stubborn skin spot. Many people should know that liver spot is more likely to appear in women, especially during pregnancy. The chance of liver spots is indeed higher. In addition to physical and ultraviolet factors, the most common cause of liver plaque formation is female hormones. According to research, it is found that friends including pregnancy, oral contraceptives, or female hormone treatment are prone to liver plaque problems. Studies on the skin tissue of liver spots show that the number of melanocytes in these spots will not increase, but the amount of melanin production will increase, and it will be distributed in the epidermal layer and the dermal layer. (Another type of pheomelanin is relatively light melanin).

The melanocytes in the liver spots are larger than the melanocytes in normal skin, and the dendrites of melanocytes are more prominent (representing that the amount of melanin transmitted from melanocytes to keratinocytes will increase). During pregnancy (especially in the late stages of pregnancy), pregnant women with liver spots on their skin often find that estrogen, lutein, and MSH (melanin-stimulating hormone) increase in the body. Some related studies have also found that these hormones increase the activity of tyrosine enzymes in melanocytes, and therefore increase the production of melanin.

So why are some women prone to liver plaques and others not? Human melanocytes have estrogen receptors, but everyone has different levels of estrogen or other hormones, so when these hormones come into contact with melanocyte receptors, the more sensitive people will A series of reactions to subsequent melanin formation occur, and less sensitive people are less likely to cause melanin hyperplasia. Regarding the treatment of liver plaques, no matter whether it is a topical whitening ingredient or a laser treatment, the biggest problem is the hormone, an internal influence factor, and the recurrence after treatment is also related to this internal influence factor. At this stage, the prevention of liver plaque can only require patients to cooperate as much as possible to reduce the effect of hormone factors.

In fact, estrogen can not only affect the melanocytes of the skin, other keratin cells and fibroblasts, estrogen has related effects. When combined with keratinocyte receptors, estrogen can increase the proliferation of keratinocytes and DNA synthesis in the epidermis of the skin. In addition, estrogen can also promote the release of GM-CSF (a growth factor) from keratinocytes to promote skin damage. Repair (including the generation of new blood vessels and the regeneration of the epidermis). Fibroblasts in the dermis also have estrogen receptors (ERα and ERβ). Therefore, estrogen can be combined with fibroblast receptors, which can promote the increase of collagen production, so it is also quite suitable for the repair of aging skin. Effect. Regarding estrogen or some related female hormones, you must pay special attention to its use. Whether it is an oral contraceptive or an estrogen ingredient added in skin care products, it will have a good effect on the skin’s anti-wrinkle and anti-aging, but May cause increased melanin spots on the skin. In addition, when female friends are treating stubborn liver plaques, they must keep in mind the factors that affect hormones such as estrogen, so that they will not feel hopeless. Finally, I want to emphasize again that melanin is part of the skin defense function. For the protection of ultraviolet rays, the function of melanin is very important. While enjoying skin whitening, don’t forget to forget that when your melanin is suppressed by you , Proper UV protection becomes more important, so the clearer the skin, the more you need good sunscreen. The treatment of liver plaques is originally a very difficult problem. It is very difficult to completely cure this skin problem in the medical cosmetic treatment. Laser treatment can improve the spots more quickly than ordinary whitening creams (such as hydroquinone and three-in-one spot removal cream), but if the patient does not have the correct concept of skin protection (especially UV protection), liver spots The recurrence of is predictable.

Superficial skin resurfacing

Recommended “Shallow Laser Skin Resurfacing” Segmented mini-shuttle laser (shallow laser skin resurfacing can quickly improve aging skin with little risk) In the past, I introduced the concept of superficial microdermabrasion, But when most people hear the words “skin peeling”, they will have a bloody and creepy picture in their hearts. Therefore, in the United States, the terrible term of superficial microdermabrasion has been changed to a more relaxed professional term-superficial laser peels. Do you think it is more acceptable? One of my personal favorite treatment items in the field of laser therapy recently is to replace the laser technology in segments, and the other is laser skin resurfacing. In the past, I have explained to you that laser treatment can be roughly divided into “peelable laser” (longer repair period and need wound care) and “non-peelable laser” (short repair period, without wound care, you can Immediately apply makeup), but since the concept of segmented lasers appeared, the concept of “semi-peelable lasers” or “peel-like lasers” was established in 目前, and currently “flying laser” and “skinning lasers In fact, these two types of laser treatments can actually be positioned as “kinds of peelable lasers”.

Shallow laser skin resurfacing is actually using “Flying Laser Fraxel” 铒 Jacob Laser “Fotona XS Pixel / Alma Pixel or” CO2 Laser “Smartxide Co2 to deal with very shallow problem skin because it is effective Sexually similar to skin peels and other chemical peels, even far beyond chemical peels, and in terms of fast-acting, other skin treatments are inferior, so it has set off quite a wave in Europe and the United States. According to some studies, For human skin, the depth of facial skin treatment is 20 to 70 microns per treatment, and 25 to 40 microns is the most suitable for upper neck skin, 15 to 30 microns for the lower neck, and chest skin. 15 to 25 microns, 10 to 15 microns is recommended for hand skin. If it is for Asians, I would personally reduce the skin depth slightly, because Asians are more likely to cause pigment rebound than whites, so for the face Skin, my personal treatment depth is about 20 to 40 microns, of course case by case is the best way to evaluate the treatment

The case of a 48-year-old female from abroad was performed after a laser skin resurfacing at a depth of 60 microns for 8 months. In effect, you can see that the skin’s brightness, spots, and even compactness have improved. The 44-year-old female from abroad received 5 treatments around the eyes at a depth of 10 micrometers every 6 weeks. Such intensive treatments do not have a long recovery period, so they can still move normally after treatment. At present, I use a carbon dioxide laser more often, and I also use 铒 Jacob laser to deal with such patients.

According to the tracking of patients after treatment, the vast majority of patients are able to have increased firmness, and the improvement of the skin is indeed clearly visible. As for the recovery period, it is mainly the time that each person can withstand, generally about 0 to 3 days. If this kind of laser treatment can be matched with appropriate post-operative care products, it is actually the most recommended treatment mode for those who want to achieve immediate skin improvement and maintain better and longer treatment results. I think most of the Patients should be able to reach a satisfactory level.

Some research data on the treatment of stretch marks Stretch marks and growth lines are actually the same kind of skin lesions. The two are mainly caused by different sources. Stretch marks are caused by the collagen in the skin tissue after the skin is enlarged during pregnancy. Broken, and growth lines are caused by overgrowth to expand the skin. However, both are the result of cleavage of the trainer protein. Growth lines on the arm

Many people will ask what is the difference between this stretch mark and the scars caused by general skin injuries? Here I will briefly explain the differences. The cause of stretch marks is as mentioned above because of collagen rupture, so you can feel that in the place of wrinkles, it will feel more relaxed, it seems that there is nothing underneath to support it. As for scars, it is generally simpler to divide them into hypertrophic scars. This is the ugly and ugly scar that we often see. This is because of the problem of the regulation of growth factors after injury, which leads to excessive repair after injury. The formation of such scars is currently considered by many studies to be related to the excessive release of transforming growth factor-β (TGF-β).

Another kind of sunken scar is like a acne scar. This kind of scar is because the inflammation after the injury is more serious. The proteolytic enzymes of the skin will increase, so the collagen will be broken down. When the inflammation is improved, , It will form a concave scar. Therefore, the cause of stretch marks is different from that of ordinary scars. Therefore, the choice of treatment methods is different. Even for stretch marks, there has been no effective treatment method.

Stretch marks that appear during pregnancy begin with a red pigmented appearance. After a period of time, it may turn white

· According to some statistics, about 90% of pregnant women will develop stretch marks, and about 70% of female adolescents will have so-called growth lines. It is because of such a high probability that many related studies in this area are being carried out in the medical community. Histologically, stretch marks will appear with atrophy of the epidermal layer, collagen in the dermal layer tightly wrapped together, and elastic fibers will become thinner or even split into pieces. Therefore, it is necessary to target such tissues in treatment. Change to deal with.

· General skin has considerable elasticity and rarely causes tearing and excessive extension of skin tissue. Many products claim to prevent or improve such skin changes. Most of these products are products containing oily moisturizing ingredients. However, in fact, the effects of these products cannot withstand clinical validation, and many studies have pointed out that such treatments can not actually achieve results. In particular, the vast majority of treatments in the market are based on rumored remedies and have no evidence at all.

· In the past, for early stretch marks, using 0.05 to 0.1% of A acid seems to improve. It can be applied to the lines once a night at first. If there is no discomfort or peeling, it can be changed to one day. twice. Some people may ask that A-acid is not suitable for use during the day. Indeed, if it is used on the skin of the face, it will cause light sensitivity problems due to sunlight exposure. However, if it is used in a place covered by multiple layers of clothing, this light sensitivity problem is less likely to occur. Other studies have pointed out that when using A-acid and feel irritating, you can mix A-acid with some moisturizing oils and fats, so as to reduce the irritation of A-acid.

In addition, research materials that can be used for topical treatment of stretch marks include growth factor creams, peptide products, A alcohols, trichloroacetic acid (TCA) skin peeling, and microdermabrasion, but these treatments are also all There are no firm conclusions that prove to be effective, and it takes quite a long time to see a little effect.

· As mentioned earlier, stretch marks are a type of skin problem that includes changes in the epidermis and dermis. Therefore, in terms of the overall treatment, it must be able to improve the epidermis and dermis to achieve good results. In 1996, Dr. McDaniel used pulsed dye lasers (585 or 595 nm wavelengths) to treat stretch marks. This type of laser is mainly aimed at redder stretch marks to improve its red appearance. , But it does not reduce the number of stretch marks or even improve the condition of the skin.

· Some studies have pointed out that when using microwave peeling and pulsed dye laser, about 60% of patients feel a good improvement in skin elasticity. This is because microwave peeling can promote the firmness of collagen, while dye laser can improve the color appearance of stretch marks.

At present, more researches use fractional laser to treat stretch marks, because this kind of laser can act on the renewal of the epidermis, the proliferation of collagen in the dermis layer, and the reconstruction of elastic fibers, so it is very suitable for use. To deal with some scars and this kind of stretch marks. A 2008 study pointed out that the results of using Fraxel (Pixel Technology, Smartxide co2) treatments show that the pigmentation of stretch marks and the improvement of overall skin condition are indeed positive. In the histological examination of the skin, the epidermal layer will be thickened after segmental laser treatment, and the increase in collagen and elastic fibers can be seen in the dermal layer. However, for the pigmented part of stretch marks, such a laser The radiation treatment effect is not very satisfactory, because the absorption medium of the segmented shuttle laser is water molecules, not heme.

Based on some of the above research data, laser treatment should have a great chance to achieve good results. Personally, I believe that dye lasers and segmented lasers can be used to deal with stretch marks. Dye lasers can improve the red pigmentation of stretch marks, and segmented lasers can improve the overall skin condition of stretch marks. Best mode for striae treatment.

Skin diseases caused by virus Cause

1. Human papilloma virus (HPV) is a double-stranded DNA virus that likes to parasitize human epidermal cells. About 70 different wart-like viruses have been identified.

2. Simple can be divided into non-genital warts (HPV1, 2, 3) and genital warts (such as HPV6, 11, 16, 18).

3. When the verrucous virus enters the epidermis, it will first colonize the underlying cells and begin to replicate, resulting in rapid proliferation of epidermal cells and accumulation of keratin. As a result, protruding proliferative organisms are generated. The virus needs to be contacted directly. The easiest channel is small. The wound, in fact, the skin around the virus wart infection may have the potential wart-like virus.

statistics

In children and young people, the incidence of viral warts other than genitalia is about one in ten.

The most common age for non-genital warts is 12 to 16 years.

The genital viral warts mostly occur in adults, most of which are infections caused by sexual behavior, and the probability of occurrence is about 1-10% according to statistics.

Newborn warts can be caused by a mother’s infection that causes birth canal infection, viral wart infections in the caregiver’s hands, or sexual assault.

symptom

Warts in different parts have different manifestations. They can be complexion or reddish, morphologically they can be pimples, plaques, and the surface is smooth or rough. They are usually clinically asymptomatic.

treatment

Most treatments are by destruction of the lesion, including Cryotherapy Electrofiring treatment Laser treatment Chemical cautery

Precautions

1. HPV is currently known to be related to specific skin cancers. For example, HPV5 and 8 are often found in flat cell carcinomas. HPV6 and 11 are also found in some special epithelial cell carcinomas. In addition, HPV6 and 11 are also found in cervical milk. Sudden hyperplasia is associated with HPV16, 18, 31, and 33 associated with cervical cancer.

2. The treatment of viral warts varies with the age of the patient, the type of viral wart, the extent of the lesion and the length of the attack, the level of the patient’s immune function, and the patient’s willingness to treat. Immune response naturally healed, but new viral warts are formed due to infection with each other. During treatment, the doctor will weigh the pain, cost, inconvenience and side effects caused by the treatment to choose.

3. There is currently a cervical cancer vaccine, which is a preventive measure against HPV cervical infection.

Crab Foot Swell

Precautions Skin

Proliferative Skin Problems-Syringoma

Proliferative skin problems-seborrheic keratosis

Proliferative Skin Problems-Epidermal Cysts

Proliferative skin problems-hyperplasia of sebaceous glands

Metabolic Skin Problems-Amyloid Precipitation

Amyloid deposition is a common and unique skin problem in Orientals. The patient’s back seems to have dirt that can not be washed, showing dark and uneven pigmentation. Cause

Under the microscope, amyloid is an elongated fiber accompanied by surrounding intangible matter, and its sources include keratin, immunoglobulin, and insulin. According to its distribution, it can be divided into systemic and local amyloid precipitation. The keratinous starch precipitation of the skin is caused by the death of keratinocytes, and the components of the dead cells are degraded into fibrous substances and deposited in the dermis. Trauma, insect bites, chronic inflammation, and infection may all induce cell death, but most keratinous starch deposits have no specific cause. Keratinous starch precipitation often has a family history, and genetic inheritance may be one of the relevant factors.

statistics

Most people of color occur, including Asians, Latinos, and the Middle East.

Lichenoid amyloid deposits are more common in males and are around 50-60 years old; plaque-like amyloid deposits are more common in females.

Spotted and lichenified amyloid deposits may be just a difference in degree or the course of the disease. In many cases, two amyloid deposits are combined.

symptom

Lichens are distributed on the outstretched side and back of the extremities, while plaques are mostly on the friction site. In addition to the upper back and limbs, they are also distributed on the neck, hips and temples. Lichen-like ones often have a strong itching sensation, while spotted ones do not. Both types of keratinous starch deposits have pigmentation and uneven pigmentation, while lichenoids are associated with keratinization and protrusions.

treatment

Laser removal.

medical treatement.

Precautions

Some studies have found that patients with amyloid deposits have the habit of scratching and brushing their backs. Those with family history should not use brushing.

Starch-like precipitates like dirt that cannot be washed off.

Metabolic Skin Problems-Xanthomas

Oral-related skin disorders-cold sores

Sebaceous Gland Related Skin Diseases-Rosacea

Sebaceous Gland Related Skin Diseases-Pimples

Pigmented skin problems-tattoos

Pigmented skin problems-melanocyte nevus

What we generally refer to as a mole is actually a melanocyte nevus. By definition, benign local melanocyte proliferation accumulates in a place called a melanocyte nevus. However, the word “mole” in medicine has a wide range of meanings and is not the same as melanocyte nevus. Cause

Melanocytes are differentiated from neural spinal cells in the embryo, and are gathered in a nest-like form on the skin, which is called a mole. These melanocytes can be classified into dermal nevus, junctional nevus, and small mole based on the different depths in the epidermis and dermis. A melanocyte nevus that appears at birth is called a congenital melanocyte nevus. The large congenital melanocyte nevus may be larger than 20 cm.

statistics

Melanocyte nevi may be present at birth, increase with age, reach a peak at middle age, and then gradually degenerate and decrease in number and become lighter in color.

With the occurrence and progress of melanocyte nevus, small nevus may progress to junctional nevus, followed by dermal nevus.

Congenital melanocyte nevus has a 1% chance.

Large congenital melanocyte moles have a higher chance of becoming malignant. symptom

Small moles are usually smaller than 5mm and may appear from an early age, or may occur after adulthood. Because the distribution is shallow, it is easy to remove. When the number of small moles is large and there is a special distribution, it is suspected that there is a correlation with certain syndromes. Generally speaking, melanocyte nevi (including dermal nevus and junction nevus) distributed in the dermis usually show bulges. The deeper the dermis, the more prominent the bulges may be.

treatment

Laser removal. resection.

Precautions

It is wrong for people to think that moles on the palms of hands and feet will become malignant. In fact, the chance of malignant transformation of moles on other parts of the body is the same, and the probability is very low. This misinformation is actually because Asian melanoma cells are more common On the palms of the hands and feet, the black lesions in this area are easy to cause worry.