Stretch Marks: Causes, Common Ages & Prevention

Stretch marks, also known as striae, can occur at any age, but they are most common during puberty and pregnancy. During these times, the body undergoes rapid growth, which can cause the skin to stretch and thin. This can lead to the formation of stretch marks. Stretch marks can also occur due to rapid weight gain, body building, or the use of certain medications, such as corticosteroids.