There is no good or bad red birthmark, it is one of the common diseases, and it is common on the face and neck. Early treatment can control its further development. The red birthmark is collectively known as hemangioma, which can be divided into vivid nevus and capillary hemangioma. 1.Vivid nevus: it is caused by the developmental disorder of primitive blood vessels, and the common vivid nevus is light red or dark red, which is usually found on the face and neck, and can also occur on the extremities, and the size of the color spot will not change with the growth of age, but it will be gradually higher than the skin, nodular, and will not fade away by itself. 2.Hemangioma: small red spots, irregular oval, soft, fading when pressed, higher than the surface of the skin, not a single number, clear border, common in the head and face, but can also occur in any part of the body, if involved in the eyes can cause glaucoma, appearing in the limbs can affect the development of limbs, causing muscle strain. The red birthmark usually does not need to be treated, but if it grows too fast, bleeds, is painful, itchy, or breaks down, it needs to be treated by a doctor in time. The main clinical treatment is laser treatment to remove it, which is difficult to operate, so you need to choose a regular institution and a professional physician. If the skin lesion seriously affects the appearance, plastic surgery can be adopted. After the operation, pay attention to keep the trauma clean and dry, eat a light diet, and do a good job of post-operative care. In addition, there are medication and liquid nitrogen freezing, which can improve the red birthmark. In addition, patients with red birthmarks need to pay attention to skin protection, avoid scratching causing skin breakdown, skin care products can be applied to skin care, pay attention to strengthen sun protection.