A 28-year-old primigravida at 24 weeks of gestation presents for antenatal review. On examination, you note a dark vertical pigmented line running from her xiphoid process through the umbilicus to the pubic symphysis. The structure marked **A** in the diagram represents this finding. Which of the following best explains the mechanism underlying this physiologic skin change?
Ready to test yourself?
Test your OBG knowledge with AI-powered MCQs and detailed explanations — no signup required to try.
Sign up free and practice all 1 Linea Nigra — Pregnancy Skin Changes MCQs with AI-powered explanations tailored to your performance.
Create Free Account