Striae distensae, more commonly known as “stretch marks,” are atrophic linear bands of skin that appear after certain precipitating factors such as pregnancy, steroid use, and dramatic changes in weight or muscle mass. At presentation, they feature a purple or pink color (striae rubra) that fades to a paler white (striae alba) over time. They are most common in adult women.

Numerous striae rubra and alba on the abdomen of a young woman.