What Does It Mean When You Get a Dark Vertical Line on Your Abdomen?

What Does It Mean When You Get a Dark Vertical Line on Your Abdomen?

1. Introduction Developing a dark vertical line running down the center of the abdomen indicates a condition known clinically as the linea nigra. This hyperpigmentation is a completely benign, physiological manifestation of altered endocrine activity, most famously associated with pregnancy. The line is not a scar, nor does it indicate an underlying disease; rather, it … Read more

Why do I get a dark vertical line on my stomach even though I am definitely not pregnant?

Why do I get a dark vertical line on my stomach even though I am definitely not pregnant?

1. Introduction The dark vertical line on the stomach, known clinically as linea nigra, occurs due to a localized increase in melanin production stimulated by fluctuating hormone levels, specifically estrogen and melanocyte-stimulating hormone. While commonly associated with pregnancy, this hyperpigmentation can be triggered in non-pregnant individuals by hormonal contraceptives, polycystic ovary syndrome, or natural endocrine … Read more