A pregnant patient asks when the dark line on her abdomen (linea nigra)will go away.The nurse knows the pigmentation will decrease after delivery because of

Question

Quizplus · Accepted Answer

The increase in melanocyte-stimulating hormone (MSH) during pregnancy causes the pigmentation of the linea nigra. After delivery, MSH levels decrease, leading to the decrease in pigmentation of the linea nigra. Estrogen, progesterone, and human placental lactogen levels also decrease after delivery, but they are not directly involved in the pigmentation of the linea nigra.

A Pregnant Patient Asks When the Dark Line on Her