What are Stretch Marks? Stretch marks are a type of scarring. They appear when the skin is stretched too quickly. They are most commonly seen on the breasts, thighs, and abdomen. Stretch marks can be caused by rapid weight gain or loss, pregnancy, puberty, or even just growing. Stretch marks can be treated by a dermatologist, Skedoc will help you for finding the Best Dermatologist in Hyderabad...