Stretch marks are elongated, narrow streaks, stripes, or lines that appear on the skin. They arise when the skin is stretched quickly and are quite common. While anyone can develop stretch marks, they tend to be more prevalent in women than in men.

These marks can appear on various areas of the body, including the abdomen, thighs, hips, breasts, upper arms, and lower back. This type of scarring occurs when the skin cannot return to its original state after a period of rapid growth, often triggered by factors such as pregnancy, weight fluctuations, or puberty.