Lanugo

Lanugo is a fine, delicate hair that is found on the bodies of certain newborn babies and is considered a normal part of fetal development. It is usually soft and silky to touch and can be anywhere from yellow-white to light brown in color. During the last few weeks of fetal development, lanugo hairs begin to grow on the face, back, arms, and legs of the fetus. The hairs help to provide extra warmth and insulation for the baby in the womb. While the amount and distribution of lanugo varies from baby to baby, almost all fetuses will have some degree of the condition. After delivery, the lanugo usually fades quickly and is completely gone from the body within a few weeks. As the baby's skin and hair patterns become more visible, the lanugo hairs become less noticeable. If the hair persists after birth, it may be a sign of an underlying condition, such as an excess of growth hormones or malnutrition. In rare cases, some babies may develop persistent lanugo after birth. This is known as postnatal lanugo and usually occurs due to extreme premature birth or the presence of certain conditions, such as anemia and Down Syndrome. The excess lanugo usually is limited to the face, chest, and back, and is often visible around the scalp, forehead, ears, and neck. In these cases, it is important to seek medical attention to ensure that the baby is growing and developing normally. In some cases, lanugo may be surgically removed as part of a cosmetic procedure. This is usually done to improve the appearance of the skin and reduce any discomfort from the extra hairs. Lanugo is a normal part of fetal development and will typically disappear after birth within a few weeks. However, in certain cases, excess lanugo may remain after birth and this may be a sign of an underlying condition. If the lanugo persists or is accompanied by other symptoms such as rapid weight gain or noticeable delays in development, it is important to seek medical attention to ensure the health and wellbeing of the baby.