What skin changes are expected during the second and third trimesters of pregnancy?

During the second and third trimesters of pregnancy, significant hormonal changes occur that can lead to specific skin changes. One of the most common and expected changes is the development of stretch marks, known as striae gravidarum, which appear as the skin stretches to accommodate the growing fetus. Additionally, many women experience hyperpigmentation, leading to darkening of the skin in certain areas, such as the face (often referred to as the "mask of pregnancy" or melasma) and along the linea alba (the line running down the abdomen).

These changes are primarily influenced by increased production of hormones like estrogen and progesterone, which cause alterations in skin elasticity and pigment production. Stretch marks result from the rapid stretching of the skin, while darkening of the skin can occur due to an increase in melanin production stimulated by these hormones.

Understanding these changes is essential for expectant mothers, as it helps set realistic expectations about their skin's appearance during pregnancy and can promote discussions about skincare and self-care practices to manage these effects.