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What could cause stretch marks on my teen's thighs?

Anthony L. Komaroff, MD
Internal Medicine
Stretch marks, or "striae" are common on skin that is subjected to continuous stretching, such as during the growth spurt in adolescence, during pregnancy, during bodybuilding, or when one is overweight. Long-term use of steroids (oral or topical) can also lead to striae. And some people may inherit a tendency to develop these unsightly stretch marks.

The skin stretches to accommodate growing tissues underneath. This can result in damage of the collagen and elastin. These are the support structures of skin. The pink/purple streaks of striae are usually not a significant medical problem, but they can be a cosmetic concern.

There is no best treatment for stretch marks. Some people have found Retin A or vitamin E creams helpful, although skin irritation is a risk. Pulse dye laser treatment has been helpful in severe cases.

Over time, the marks on your teenager will fade in color and be less noticeable as her growth spurt subsides. In the meantime, try to make sure your teen is not overeating to add to her weight gain.

An unscented moisturizer can be helpful. Sun protection is important, too, to avoid further damage to skin. In severe cases, it is important to see a doctor because certain medical conditions can lead to the development of striae.
Harvard Medical School Skin Care and Repair

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.