什么是lanugo?

您可能习惯于看到较长的末端头发和体内短的Vellus头发。但是这些并不是人类常见的唯一类型的头发。还有另一种称为Lanugo的类型。

Lanugo is the hair that covers the body of some newborns. This downy, unpigmented hair is the first type of hair that grows from hair follicles. It can be found everywhere on a baby’s body, except on the palms, lips, and soles of the feet.

大多数胎儿在怀孕的第四或五个月左右出现野血。但是头发通常不出现时出现。它通常会在怀孕的第七或八个月左右出生,尽管它可以在出生后数周持续并脱落。出生时的野血在早产婴儿中更为常见。

Read more: What is vellus hair? »

Lanugo的图片

What is the purpose of lanugo?

在整个怀孕期间,婴儿在充满羊水的囊中成长和发育。这种保护液缓冲婴儿。

婴儿的皮肤上覆盖着一种蜡状,类似奶酪的物质vernix,可保护皮肤免受羊水的侵害。Vernix防止婴儿的皮肤在子宫中撕裂。Lanugo有助于保护皮肤,并使Vernix更容易粘附在婴儿的皮肤上。

Why do people with eating disorders develop lanugo?

Once a baby sheds lanugo hair — either in the womb or outside the womb — the hair usually never returns. The only exception is in cases of severe malnutrition.

由于Lanugo可以保护皮肤和身体,因此营养不良的人可能会在以后的生活中长在脸部和身体上。这发生在饮食失调中,例如anorexia nervosaor贪食症。People with anorexia stop eating or eat very little because they fear weight gain. People with bulimia binge eat and then self-induce vomiting to avoid weight gain.

两种情况都会引发营养缺乏,并导致体内脂肪不足。Lanugo成长为生理或自然反应以隔离身体。饮食失调会破坏体温。当没有足够的体内脂肪时,身体就无法保持温暖。

Lanugo需要接受治疗吗?

柔毛在新生儿不需要treated. Even when a lot of hair is present at time of birth, there’s no need to worry. Your baby will naturally shed this hair within the first few days or weeks after birth.

出生后轻轻按摩婴儿的皮肤可以促进去除野血。但是,这不是必需的。尽管按摩可能有效,但并非没有风险。婴儿的皮肤很细腻,如果您无意间擦得过于努力或太多,这会导致酸痛,发红或干燥。因此,离开头发并自行脱掉头发可能会更有益。

在饮食失调症或营养不良的情况下,治疗Lanugo始于治疗潜在的健康状况。不健康的体重可能会危及生命,但有帮助。如果您患有饮食失调症,请向医生寻求帮助。如果您认识患有饮食失调症的人,请鼓励他们寻求帮助。

Different treatment options are available depending on the severity of the disorder, such as:

  • 住院住院或医院治疗
  • 个人咨询
  • 支持小组
  • nutritional counseling
  • 药物(抗抑郁药,抗精神病药,情绪稳定器)

外卖

Lanugo on a baby’s skin isn’t a cause for concern, but if you have questions, don’t be afraid to speak with your doctor. The presence of lanugo on adult skin often points to an eating disorder and shouldn’t be ignored.