The dark brown line of linea nigra typically extends above and below the belly button. Linea nigra is typically seen in pregnant women as a sharp vertical, flat, dark line in the middle of the stomach.
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Linea Nigra  Information for adults

Picture of Linea Nigra: The dark brown line of linea nigra typically extends above and below the belly button. Divider line
The dark brown line of linea nigra typically extends above and below the belly button.
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Who's At Risk
Linea nigra tends to appear some time in the second trimester of pregnancy. It is more prominent in women of color. It is also present on women with fair skin, though it is not as noticeable.
Last Modified: 22 Dec 2008