why do people have birthmarks
Making humans isn’t like making widgets. Imperfections happen. Birthmarks basically consist of two types: spongy vascular lesions made up of blood vessels and non-vascular pigmented lesions. Vascular lesions, which are the result of abnormal blood vessel development, tend to take the form of pinkish-red splots or “port wine stains,” or dense, intricate networks of bluish veins. Vascular lesions are typically present at birth, usually on the face. Sometimes the lesions develop later in life. Occasionally, they appear and disappear as a person’s body undergoes significant physiological change, such as puberty or pregnancy. By and large, they’re permanent, though they can be lessened with surgery or laser treatment. The non-vascular pigmented lesions afflict children more than adults and are caused by abnormal melanocyte cells in the skin producing too much melanin pigment. The reason for this is not known. Pigmented lesions can appear anywhere on the body. Location seems to be random. Co
