It can be removed by treatment. The area of the red birthmark will gradually expand with the patient's age, the color will become deeper and deeper, and the patient's lesions will gradually deepen. The area of red birthmark will become larger and larger, which will not only seriously affect the beauty of patients, but also cause bad psychology and serious psychological burden to patients.

Because the red birthmark is caused by vascular malformation, and the disease occurs in epidermis and dermis, the affected part of the patient may often be rubbed or scratched, thus causing ulceration and bleeding, especially in summer, because of the hot weather, it is easy to sweat, and the patient will itch when sitting on the skin. Because of frequent scratching, it leads to a lot of bleeding for a long time. The danger of red birthmark after ulceration and bleeding is easy to be infected.