Stretch Marks (Striae) - Symptoms, Causes & Treatment
By ScanSkinAI Editorial Team✓ Reviewed for medical safetyLast updated June 2026
Indented streaks that appear on the skin when it stretches or shrinks quickly. Common during pregnancy, rapid weight changes, and growth spurts.
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Quick Answer
Stretch marks (also known as striae) are indented streaks that appear when your skin stretches or shrinks too rapidly, causing the deeper layers to tear. They are incredibly common during pregnancy, teenage growth spurts, and periods of rapid weight change. Newer marks usually look red, pink, or purple, while older ones fade to a silvery-white. Although they are completely harmless, they can be a cosmetic concern for many. No treatment can erase them entirely, but early intervention during the red phase offers the best chance of making them less noticeable.
Clinical Context
Striae distensae (stretch marks) are a form of dermal scarring that occurs when connective tissue is stretched beyond its elastic capacity. The dermis tears, with disruption of collagen and elastin fibers. New stretch marks (striae rubrae) are red or purple due to inflammation and visible blood vessels; older ones (striae albae) are pale and atrophic. Up to 90% of pregnant women, 70% of adolescent females, and 40% of adolescent males develop striae. While harmless, they're a significant cosmetic concern. Cushing syndrome should be considered if striae are purple, wide, and horizontal.
Symptoms
- Indented streaks on skin
- Pink, red, or purple initially
- Fade to silvery-white over time
- Common on abdomen, breasts, thighs, buttocks
Severity & Progression
Causes & Risk Factors
- Rapid skin stretching
- Pregnancy
- Rapid weight gain or loss
- Growth spurts
- Corticosteroid use
- Genetic factors
Treatment & Management
No treatment completely eliminates stretch marks. Early intervention during the red/purple phase offers best results. Tretinoin (0.1% cream) improves early striae by stimulating collagen. Hyaluronic acid and silicone gels may help. Laser treatments (pulsed dye laser for red striae, fractional CO2 or erbium for white striae) show moderate improvement. Microneedling stimulates collagen remodeling. Radiofrequency and platelet-rich plasma are emerging options. Most over-the-counter creams lack evidence. Prevention during pregnancy with moisturizers may help slightly, but genetics largely determines susceptibility.
- Tretinoin cream (when new)
- Laser therapy
- Microneedling
- Chemical peels
- Often fade naturally but don't disappear completely
Red Flags & Complications
Seek medical attention if you experience any of the following:
- Cosmetic concern and psychological distress
- Reduced skin elasticity in affected areas
- Rarely, wide striae may indicate underlying medical condition (Cushing syndrome)
Self-Care Tips
- Moisturize skin regularly during pregnancy
- Maintain steady weight (avoid rapid fluctuations)
- Stay hydrated
- Massage skin to improve circulation
- Have realistic expectations - stretch marks fade but rarely disappear
- Consider camouflage makeup for events
When to See a Doctor
If concerned about appearance or if stretch marks appear without obvious cause
Frequently Asked Questions
What do new stretch marks look and feel like?
When stretch marks first form, they usually appear as slightly raised or indented streaks that are pink, red, purple, or dark brown, depending on your skin tone. You might also feel a slight ridge or depression when you run your fingers along them. During this early phase, known as striae rubrae, the streaks might sometimes feel slightly itchy or sore as the skin's deeper layers stretch.
Why did I suddenly get stretch marks on my body?
You get stretch marks when your body grows faster than your skin can comfortably stretch. This rapid expansion tears the collagen and elastin fibers in the dermal layer. It is extremely common during puberty growth spurts, pregnancy, rapid muscle-building, or significant weight fluctuations. Your genetics also play a major role; if your parents had stretch marks, you are more likely to develop them too. Prolonged use of corticosteroid creams can also cause them.
What is the best way to get rid of stretch marks?
It is important to know that no treatment can completely erase stretch marks. However, treating them early while they are still red or purple offers the best results. A doctor might prescribe a tretinoin cream to stimulate collagen production. In-office procedures like pulsed dye lasers, fractional laser therapy, or microneedling can also improve their appearance. Once stretch marks fade to white, they become much harder to hide or treat.
Will my stretch marks eventually fade away on their own?
Yes, stretch marks almost always fade over time, but they rarely disappear completely. As the initial inflammation settles down, the blood vessels contract, and the red or purple color starts to fade. Eventually, they become thin, silvery-white, or barely visible indented lines known as striae albae. For many women, pregnancy-related stretch marks fade significantly in the months and years following childbirth, blending much more closely with normal skin.
Should I ever see a doctor about my stretch marks?
Stretch marks are generally completely harmless and do not require medical treatment. However, you should consult a doctor if you develop very wide, purple, horizontal stretch marks on your abdomen without any obvious reason like weight gain or pregnancy. In rare cases, these can be a sign of an underlying medical condition, such as Cushing syndrome, where the body produces too much cortisol and weakens the skin.
Do over-the-counter stretch mark creams and oils actually work?
Despite significant marketing claims, most over-the-counter creams, lotions, and oils have little to no medical evidence proving they prevent or erase stretch marks. Genetics largely determines whether you will get them. Keeping your skin well-hydrated and using products containing hyaluronic acid or silicone may offer minor benefits during pregnancy or growth spurts, but you should keep your expectations realistic when buying expensive cosmetic products.
Why are some stretch marks red and others are white?
The color simply indicates the age of the stretch mark. Red, pink, or purple lines are new stretch marks. They are colored this way because the skin tearing causes inflammation and makes the underlying blood vessels visible. White or silvery lines are mature, older stretch marks. At this stage, the blood vessels have narrowed, and the markings are essentially settled, permanent connective tissue scars beneath the skin surface.
How can ScanSkinAI help with stretch marks?
ScanSkinAI can analyze photos of your skin to help you identify whether your marks match the typical visual patterns of early or mature stretch marks. It is a helpful educational tool to track how your skin changes over time. However, please remember that ScanSkinAI is an AI screening aid, not a diagnostic tool. If your stretch marks are unusually wide, purple, or accompanied by other health symptoms, always consult a healthcare professional.
Medical References
Information on this page is sourced from and verified against reputable medical resources:
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Medical Disclaimer: This information is for educational purposes only and is not intended as medical advice. The content on this page should not be used to diagnose or treat any health problem. Always consult with a qualified healthcare professional for proper medical evaluation, diagnosis, and treatment of your condition.