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Individual cases were documented as early as the Middle Ages. Several instances of hypertrichosis in families were recorded throughout Europe, Asia, and North America well into the 20th century. At least one case of congenital hypertrichosis has been diagnosed since the mid-2000s. Almost your entire body is covered in some form of hair. The only parts without it are the palms of your hands, your lips, and the soles of your feet. Whether it’s lanugo or head hair, your baby’s locks are as unique as they are.
What Causes Hypertrichosis?
Lanugo plays an essential role in binding the vernix caseosa to the skin of fetuses. It protects the fetus from damaging substances found in amniotic fluid, most notably urea and electrolytes.[1] Lanugo is the first type of hair to develop in humans. The interaction of lanugo with the vernix is also important in controlling the tempo of the fetal developmental rate during various times in the gestation cycle. Hair growth starts on the scalp around the eyebrow, nose, and forehead area and proceeds in a cephalocaudal direction from head to toe. It is shed at about 33 to 36 weeks gestation, when it becomes subsequently incorporated into the amniotic fluid, eventually contributing to the composition of the meconium. Lanugo is ultimately replaced by vellus (fine, thin hair) and terminal hair (thicker hairs found on the scalp, axilla, and genitalia).
Why Would an Adult or Teenager Have Lanugo?
Babies born after 42 weeks do not usually have any visible lanugo. One of my little sisters friends used to pet my arm and say how much she loved my long arm hair that was as soft as a kittens. If doctors suspect an inherited condition such as Cornelia de Lange syndrome or Rubinstein-Taybi syndrome, genetic tests may be required. You either haven't confirmed your e-mail address or we still need proof that you are a member of the medical profession.
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Why do people with eating disorders develop lanugo?
Lanugo typically falls off in the last eight weeks of pregnancy. Once it’s shed from the skin, it mixes in with amniotic fluid. Because your baby swallows amniotic fluid in the uterus, lanugo becomes part of your baby’s first food. Your baby will pass the tiny hairs in their first poop at birth, called meconium. Lanugo is a type of body hair a fetus develops in the uterus for protection and warmth.
Don’t stress about baby tresses
Experts are not entirely sure how this happens, but continue to study this and other hormonal effects of lanugo. It’s your baby’s first hair, and it plays a critical role in protecting their skin and keeping them warm in the uterus. There have been a few cases of someone developing lanugo due to cancer. In the case of an eating disorder or malnutrition, treating lanugo starts with treating the underlying health condition. An unhealthy body weight can become life-threatening, but help is available.
How Long Does Lanugo Remain After Birth?
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If you have an eating disorder, seek help from your doctor. If you know someone with an eating disorder, encourage them to seek help. Gently massaging a baby’s skin after birth can facilitate the removal of lanugo. Although massaging can be effective, it isn’t without risks. A baby’s skin is delicate, and if you inadvertently rub your baby’s skin too hard or too much, this can cause soreness, redness, or dryness. Therefore, it may be more beneficial to leave the hair alone and allow it to shed on its own.
If it grows in new places, for example, the face or hands, it’s likely lanugo. Lanugo sticks to the vernix to help it stay in place on the skin. If the vernix did not have the hair to cling to, it could slide off the baby's body. Lanugo hairs in adults may be mistaken for vellus hairs, but can be identified as new, fine hairs growing in greater quantity in unexpected areas of the body.
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At What Age Does Lanugo Hair Appear?
It helps protect them and keeps them warm while they grow. Some newborns have lanugo covering their bodies at birth, especially if they’re born prematurely. Lanugo can develop in people with eating disorders or certain tumors. If your baby is born with lanugo hairs, he or she may appear to be covered in a coating of soft fur. Lanugo is not present in areas where there is no hair growth are the palms, nails, lips, genitalia, and soles of the feet. Lanugo is most visible on a baby’s back, shoulders, and tailbone, although it can appear anyplace there are hair follicles.
Shortly after birth, a child will lose their lanugo and vellus hairs will replace them. These hairs are also fine and will last throughout the person’s life. It is natural for babies to be covered in lanugo, especially if they were born prematurely. However, the reappearance of lanugo in adults is unnatural and a sign of various health conditions.
Lanugo is common among infants but not with older children or adults. Massaging the area of skin very gently with mild baby oil might help expedite lanugo falling out, but use extreme care to prevent damaging your baby’s skin. Only use products that will not irritate your baby’s skin or eyes. Do not wax, shave, or use a body hair remover to get rid of your baby's lanugo. These products are not safe for infants and could harm their delicate skin.
Lanugo isn’t a cause for worry when it’s seen in newborns. However, severe eating disorders or malnutrition can cause lanugo. If you’re an adult and notice lanugo on your skin or on the skin of a friend, it’s a good idea to talk to a healthcare provider.
In addition to his current work, Dr. Amos is using his vast experience to launch Obie, a science-based app that offers personalized fertility advice. From then on, parents will protect their child from infections, diseases and cold through hygiene, nutrition and loving cares. Sometimes it still occurs, even though the mother has a sufficient amount of the vitamin, although this is rare. In these cases, doctors suspect it could be a genetic defect.
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