Linea nigra
As Linea nigra ( latin for black line ') or Linea fusca (Latin for, brown line') is in a vertical line-shaped dark discoloration of the median abdominal skin pregnancy , respectively. The cause of this discoloration is the increased production of the melanocyte-stimulating hormone . In very rare cases, this discoloration occurs even without pregnancy. In the second trimester of pregnancy, in particular, this section of skin turns dark in some women. The reason is the increased hormone levels during pregnancy, which leads to an increased production of melanocyte-stimulating hormones, which in turn cause an increase in melanins. Therefore, during pregnancy there is increased skin pigmentation on the nipples, armpits, in the genital area or the abdominal area.
The linea nigra arises when the linea alba (Latin for "white line"), a connective tissue seam in the middle of the abdomen that is normally invisible to everyone, turns dark due to this pigmentation disorder. However, the linea nigra is not always equally pronounced. It is usually more visible in dark-haired women than in blond women.
This discoloration disappears completely or at least significantly in most cases shortly after the normalization of the hormonal balance after the birth.
Individual evidence
- ↑ Kurt JG Schmailzl, B.-Joachim Hackelöer: Pregnancy and illness: interaction, therapy, prognosis . Georg Thieme Verlag, 2002, ISBN 3-89412-446-6 ( full text in the Google book search).
- ↑ Help! Where does the dark line on my stomach come from? In: Hello parents . July 23, 2018 ( hallo-eltern.de [accessed October 8, 2018]).