Linea Nigra in pregnancy.
Linea Nigra in pregnancy.
The linea nigra is a dark vertical line that appears on the stomach during pregnancy. It's also known as the "pregnancy line".
Here are some things to know about the linea nigra:
What it is
The linea nigra is caused by hyperpigmentation, which is when some skin cells produce more melanin than normal.
What it looks like
The linea nigra runs from the belly button to the pubic area, but can extend towards the abdomen. It's usually about 1 centimeter wide.
Who it affects
The linea nigra is more likely to occur in people with naturally darker skin.
Is it dangerous?
No, the linea nigra is not dangerous and doesn't need treatment.
When it fades
The linea nigra will usually fade after your baby is born, but it might not disappear. In darker skin colors, this may take up to a year after pregnancy.
What causes it
The linea nigra is caused by increased levels of estrogen, progesterone, and melanocyte-stimulating hormone (MSH). These hormones stimulate cells called melanocytes in your skin, causing them to produce more melanin.