“Birthmark” usually refers to the “different color” area of the skin that babies have when they are born. It is rumored that red birthmarks are a symbol of good fortune. This makes many people lack precautions against red birthmarks, so that some red birthmarks are serious, and finally cause physical harm and have adverse effects on health.
Red birthmark is a common birthmark. Many people call it port wine stain, also known as port wine nevus and telangiectatic nevus. It is actually a strawberry-shaped angioma/vascular malformation, which is a congenital microvascular malformation. It mostly occurs in infants or children. Once it appears, it will not disappear on its own. If it is not treated in time, it will not only affect the appearance, but also easily cause the risk of lesions.
The pathogenesis of port wine stains is still unclear. Studies have shown that the nerve distribution in the lesion area of port wine stains is significantly reduced compared with the normal side skin. The reduction in the nerve-vascular ratio may lead to vascular dilatation malformation, which may be an important factor in its pathogenesis. Histological studies have found that it is mainly caused by congenital weakness of the capillary wall and the malformation of the superficial dermal capillary dilatation malformation. The wall of the malformed blood vessels is still composed of a single layer of endothelial cells without proliferation, which is different from the hemangioma characterized by the proliferation of vascular endothelial cells. Therefore, it is classified as a vascular malformation. 
Introduction
Cause
Specific symptoms
Red birthmarks are usually dark red, orange, or dark purple. There are two main situations:
One is what people commonly call hemangioma, which often protrudes from the skin and is a red lump like a strawberry. The other type is a port-wine stain that is present at birth , which is a flat patch on the skin and often has no symptoms.
Red hemangiomas tend to disappear naturally, but if they grow in the oral area, such as the eyes, nose, mouth, etc., they must be treated early. Red port wine stains that are flat on the skin often progressively worsen with age, so they must be treated early. It is common in newborns or infants. 
Affected population
Treatment options
As for port wine stains , since they will not fade, if left untreated, they may become thicker and darker in color in adulthood, and may become nodular. If they occur on the face, they will be extremely damaging to the appearance. In addition, some port wine stains may be complicated by visceral vascular malformations (such as intracranial vascular malformations). If symptoms occur, it is recommended to see a doctor in time for a comprehensive examination and evaluation.
A. Laser removal of red birthmarks
Introduction:
Laser removal of red birthmarks utilizes the “selective photothermal principle” of Nd:YAG lasers. Hemoglobin absorbs a large amount of laser energy in an instant and then thermally coagulates, forming methemoglobin in an instant, causing blood in exposed and abnormal blood vessels to coagulate and necrotize. After being absorbed, the blood is discharged from the body through the lymphatic circulation, thus highly selectively removing red birthmarks without damaging normal skin. Compared with traditional excision and electrocautery, the safety and effectiveness are quite guaranteed.
Working principle:
Using long pulse Nd:YAG, the penetration depth is 5-6mm, which can be used for highly effective treatment. It is able to penetrate deeply into the skin to produce a thermal effect without damaging the skin surface. Its uniform absorption in the skin and low absorption in pigments make it safe to use in all skin types. For vascular type birthmarks, it can target the hemoglobin in the birthmark, destroying the blood vessels in the birthmark.
process:
1. Face-to-face consultation: Evaluate the scope of treatment and recommended course of treatment based on personal needs and birthmark conditions.
2. Patch test: Perform a patch test 24 days in advance and proceed if there is no allergic or uncomfortable reaction.
3. Preoperative preparation: apply anesthetic, clean and disinfect the treatment area, and wear goggles.
4. Laser treatment: illuminate the birthmark, strengthen the dark areas, and use cold air duct to cool down.
5. Postoperative recovery: Apply aloe vera gel to soothe and calm.
6. Precautions after surgery.
Duration: 1-1.5 hours
Suitable for the crowd:
- People with various common red birthmarks;
- People who want to remove red birthmarks safely;
Equipped with VSP (Variable Square Pulse) technology, it can produce an almost instantaneous temperature increase, allowing the laser energy to penetrate deeply into the skin, producing a thermal effect without damaging the skin’s surface. 
Ai Beauty laser removal of red birthmarks:
Red birthmarks are very common. Most red birthmarks are caused by vascular diseases. The classification is numerous and complex, and the clinical outcomes are also different. Although some cases can disappear on their own, it is still recommended that you consult a doctor in time and seek guidance from a professional doctor. Do not believe in rumors such as birthmarks affecting “blessings or disasters”.
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