Stretch marks (striae) are indented streaks that often appear on the abdomen, breasts, hips, buttocks and thighs. Over time they become less noticeable. Stretch marks are particularly common in pregnant women, especially during the last trimester. Treatment can make stretch marks fade, but it won't completely remove them.
Stretch marks aren't painful or harmful, but some people feel distressed about the way they make their skin look.