Belly button line can have vertical and horizontal line two categories, if the vertical line, may be abdominal white line or pregnancy line, horizontal line may be caused by obesity, are generally normal phenomenon.
1. Abdominal white line: also known as the white line, is the abdominal white line from both sides of the rectus abdominis muscle sheath in the abdominal midline intertwined with each other, located in the midline of the abdominal floor wall of white fibers, umbilical cord on the white line is wider, umbilical cord under the white line is narrow and solid, is the body’s normal anatomical structure.
2. Gestational line: gestational line refers to the middle of the stomach of most women after pregnancy will appear a vertical line through the navel, mostly in pregnancy 2 ~ 4 months, is formed with the hormonal changes during pregnancy and the emergence of different individual gestational line length and depth are not the same. It is a normal phenomenon.
3. Obesity: mostly seen in obese people, abdominal fat, and long time to keep sitting, squatting, etc., the abdominal skin will form normal skin folds, in the appearance of the obvious horizontal line appears, also belongs to the normal range, without special treatment.