Generally speaking, it doesn't matter if there is a mole, but if it is a mole in an obvious part such as the face, it will make people feel more troubled. At present, laser Dot mole method is the best way to remove moles. Let's take a look at the specific introduction of laser Dot mole. 1, Applicability-Laser Dot mole can be used to treat various moles, such as mixed moles, which are acquired and generally flat. The cells of nevus are located at the junction of epidermis and dermis, with a large number of cells, strong activity and easy to become malignant. Compound nevus-Acquired compound nevus will change from flat to slightly convex hemisphere with smooth surface over time. With the deep growth to the upper dermis, its color will change to skin color or brown-black, and the probability of malignant transformation is also low because of the decrease of black cell activity. Intradermal nevus-evolved from compound nevus. The cells of the nevus grow downward and leave the epidermis completely. Clinically, it is convex, brown to fleshy. It has obvious therapeutic effect on various pigments. Such as nevus OTA, pigmented nevus, bad eyebrow tattoo, eyebrow tattoo eyeliner, senile plaque, nevus flammeus, eyebrow tattoo, tattoo, varicose vascular disease, vascular disease, etc. 2. Treatment principle —— The huge energy of laser in an instant acts on the pigment tissue, so that the pigment is crushed, decomposed, swallowed by macrophages, and excreted with lymphatic circulation to achieve the purpose of removing pigment. 3, postoperative attention-local wounds, can not touch water; After operation, the scab will fall off naturally in 5-7 days; Go back to the hospital for reexamination one and a half months after operation; It is especially important to pay attention to sun protection. There is no doubt about the effect of laser nevus removal. Different wavelengths of laser can be used for different spot nevus to achieve better targeting effect. Let's take a look at the laser removal effect of different wavelengths. Wavelength 1 and 532nm- suitable for removing superficial pigmented nevus around eyes. Such as birthmark, nevus OTA, nevus nigrum, coffee nevus, freckles, pigmentation, eyebrow tattoo, eyeliner tattoo, erythema nevus and vascular diseases. 2, 585nm wavelength-suitable for all kinds of erythema and vascular diseases. 585nm is the strongest absorption peak of red blood cells, and it is the best wavelength to treat various erythema nevus and vascular diseases, such as spider telangiectasia, hemangioma, rosacea and deep erythema. 3, 650nm wavelength-suitable for removing tattoos and pigmented nevus. The wavelength of 650nm is the absorption peak of green dye, which is the most effective for removing the green pigment in professional tattoos, and can also be used for removing general pigmented nevus. 694nm wavelength (ruby laser)-Suitable for removing Ota nevus, sunlight spots, freckles and blue-black, black, green and brown tattoos. 5, 1064nm wavelength-suitable for deep pigmented lesions and dark tattoos. 1064nm has strong permeability to skin tissue, and can reach melanocytes or black-blue tattoo dye particles in deep skin. 6, 2940nm wavelength (Er laser)-suitable for wrinkle removal of skin around eyes. The thermal damage to the skin is very shallow, only 5 ~ 10μ m, the skin heals quickly, and there is basically no pigmentation after operation, which is especially suitable for Asians and darker skin. The above is the effect of removing moles with lasers of different wavelengths. It can be seen that the efficiency of laser treatment is very high, and different moles can use different wavelengths to achieve the most ideal effect. Editing the indications of this paragraph has obvious effects on the treatment of various pigments. Such as nevus OTA, pigmented nevus, bad eyebrow tattoo, eyebrow tattoo eyeliner, senile plaque, nevus flammeus, eyebrow tattoo, tattoo, varicose vascular disease, vascular disease, etc. Edit the laser treatment method and steps in this paragraph 1. Disinfect skin with 0.5% iodophor. 2. Selection of laser and laser parameters (1) For pigmented nevus with obvious and deep protrusions, ultra-pulse CO2 laser can be selected, and Q-switched laser can be used for treatment if necessary. The specific method of laser treatment of nevus: use 0.5% lidocaine to infiltrate anesthesia at the base of nevus tissue. Patients with good pain tolerance, small lesions and few moles can be prepared without anesthesia or external use of EMLA topical anesthetic. ①UItraPulse: For larger skin lesions, CPG hand tools can be used, with energy of 500 mJ and power of 25 W, and the spot diameter should be smaller than that of nevus; For moles with a diameter less than 2mm, hand tools with spot diameter of 1mm were selected, with energy of 300 mJ and power of1.2w; For larger hemispherical or pedicled pigmented nevus, the hand with spot diameter of 0.2mm can be used to cut it off along the tangential direction of the skin, and for the remaining deep punctate pigmented tissue, lmm's hand can be used for punctate gasification. ②SilkTouch: 125mm hand tool with spot diameter of 0.6—3mm and power of 5- 15w, which can be used for gasification and continuous wave setting cutting. ③ Er: YAG: vaporizable, with a light spot of 3mm, frequency of 1- 10 Hz and power of 5- 15 J/cm2. Erbium laser has less damage to surrounding tissues and finer gasification than CO2 laser, but the same treatment depth requires more pulses than CO2 laser, such as CO2 laser for deeper moles. When the laser vaporizes the tissue, you can hear a small explosion and see the dry fragments of nevus tissue protein. Every gasification 1 time, the surface debris must be wiped with normal saline, cotton swab or gauze to avoid unnecessary thermal damage during repeated scanning. Gasification to black basically disappeared, and the following signs were observed by naked eyes: rough skin appendages were seen at facial wounds, which were white particles, and most of these granular tissues were sebaceous glands; For example, dense connective tissue can be seen in the wound of limbs or trunk, and the density of tissue gradually decreases from dermal papilla to deep tissue. When the gasification continues, the attachments in the dermis disappear, the tissue density becomes low, and thick fiber bundles can be seen, which looks like cotton thread immersed in water. At this point, it has reached the reticular layer of dermis, and gasification should stop. At this time, if filamentous melanin or punctate melanin still extends deep, it can be treated with VersaPulseQ-switched 75nm or 1 064nm laser, with a spot of 2-3mm and an energy of 4-8J/cm2, and repeated pulses locally. Edit this paragraph. If the wound is small after laser nevus removal, erythromycin or chlortetracycline ointment can be used externally and the wound is exposed. Pay attention to the cleanliness of the wound and take antibiotics orally if necessary to prevent wound infection. (2) For superficial pigmented nevus, Q-switched laser can be used for treatment. Specific methods: VersaPulseQ-switched 532nm, 755nm or 1 064nm laser can be used for treatment, the spot is 2-3 mm, the energy is 4-8 j/cm2, and the pulse is repeated several times locally. A large or small scab usually remains after nevus resection, so special attention should be paid to avoid local infection. Specific method: Don't touch the water for the first 2 days, and try not to wash your face. In the first 23 days, you can cover the wound with a hemostatic patch to avoid pollution, but you should change the hemostatic patch frequently to let the wound breathe in time. You can wash your face after 2 days, but dry it with a dry soft towel immediately. Be careful not to sweat too much. Be sure to pay attention to sun protection. The whiter the skin, the more attention should be paid to sun protection to ensure the effect of removing moles. Don't buckle the scab with more than one hand at a time, wait for it to fall off naturally, otherwise it is easy to leave scars. Note for editing this laser Dot mole: Almost all moles can be removed, but if they are not handled properly, most of them will leave obvious scars. Moles on eyelids and nose are more difficult to remove, eyelids are more difficult to sew, and moles on nose are more difficult to repair. Skin grafting or skin flap transfer is necessary. Some people have the physique of swollen crab feet, and scar tissue will proliferate abnormally, resulting in hypertrophic scars. Crab foot swelling is common in earlobe, shoulder, upper arm, chest and back, but not in face. If people with this physique want to get rid of moles for beauty, they should first inform the doctor of their physique so as not to get rid of moles for big scars. Before removing the mole, you should not apply any maintenance or cosmetics. These operations require anesthesia. After laser surgery, you should do a good job of sun protection. Before the wound scabs, you can apply antibiotic ointment or artificial skin according to the doctor's advice to ensure the best effect. Apply beauty patch 3 ~ 6 months after stitches are removed.