There are many types of birthmarks, and different types of birthmarks are different. Usually, some birthmarks will grow bigger and bigger, such as cafe au lait, nevus of Ota, nevus of sebaceous glands, nevus of bright red, etc., and some birthmarks won’t grow bigger and bigger, and may fade away with age, such as Mongolian spots, infantile hemangiomas, nevus of the epidermis and so on. 1. Coffee spot: Coffee spot lesions appear as light brown to dark brown spots or patches, which can not be cured by themselves and can increase with age. 2. Nevus of Ota: Nevus of Ota manifests as blue-gray, green-gray, gray-brown and other colors of skin lesions, uneven coloring of the patches, most of the unilateral onset of the disease, deepening and expanding with age. 3. Nevus sebaceous: the lesions of this disease are usually round, ovoid or band-shaped plaques with irregular edges, which will become bigger with age. 4. nevus erythematosus: the lesions are light red, dark red or purplish-red patches of varying sizes, which usually do not subside on their own, and the untreated or incomplete treatment of birthmarks will progress with age. 5. Mongolian spots: Mongolian spots have a smooth surface and are light blue or blue-gray in color. Most Mongolian spots will fade away naturally when they grow up. 6. Infantile hemangioma: this disease is mainly manifested as bright red spots on the skin surface or nodular lesions and other symptoms, with self-limiting, can subside on its own. 7. Epidermal nevus: It is a skin lesion with skin color or light brown, patchy or strip-like distribution, and usually does not increase in size. It is suggested that patients should go to regular hospitals according to their own conditions, if necessary, for active treatment and removal of birthmarks.