Melanoma isn’t just a “face and shoulders” problem – it can show up in places you might never think to check or protect, including the buttocks and lower back, as highlighted in Dermatology Times’ feature “Sunscreen’s New Blind Spot: Fashion Trends, Tanning Myths, and the Rise of Gluteal Melanomas.” As swimwear trends shift and tanning myths spread on social media, dermatologists like Whitney Hovenic, MD, at Skin Cancer & Dermatology Institute are seeing more serious sun damage in these often‑ignored areas.
“These Delicate Areas Are Vulnerable”
When Dr. Hovenic goes to the beach, she doesn’t just notice the waves and sunshine – she notices sunburns. What worries her most are the bright red burns on parts of the body that traditionally have been covered and protected, like the gluteal region (buttocks) and lower back.
“Every single time I go to the beach, I realize how important it is to share this message that these delicate areas are vulnerable,” said Hovenic, who practices at the Skin Cancer & Dermatology Institute in Reno, Nevada.
Her message is simple but powerful: if your swimwear exposes more skin than your everyday clothes, every bit of that exposed skin needs thoughtful sun protection, even if it has “never burned before.”
Why Previously Covered Skin Is Now at Risk
For decades, the buttocks were considered a very low‑risk area for melanoma because they almost never saw direct sunlight under typical clothing and more conservative swimsuits. Large epidemiologic studies have backed this up, showing that melanoma risk at different body sites closely tracks how often those sites see intermittent, intense sun—trunk in men, legs in women, and so on.
The biology supports this too. Melanomas that develop on intermittently exposed areas (like the trunk, shoulders, and legs) often follow a specific pathway linked to intense, episodic UV injury, higher total mole counts, and BRAF mutations. When a region that has been “UV‑naive” for most of a person’s life suddenly starts getting repeated strong sun exposure, it can begin to behave like those higher‑risk sites.
In other words, if your bikini or swim trunks have changed in a way that suddenly exposes your lower buttocks or posterior thighs, your risk profile for those areas may change as well, especially if you aren’t consistently using sunscreen.
Swimwear Trends: Less Fabric, More UV
Minimalist swimwear – cheeky bottoms, high‑cut legs, thong and string styles – has moved from niche fashion to mainstream. A classic case‑control study from the 1980s already showed how powerful this shift can be: women who wore bikinis or bathed nude between ages 15 and 24 had a dramatically higher rate of trunk melanoma compared with women who wore more conservative one‑piece suits.
Today, those styles are common across many brands and heavily marketed to younger adults, including Gen Z. What’s rarely mentioned in those marketing campaigns is that the skin being exposed often has no “history” of sun exposure – no gradual acclimation, just sudden, intense UV in sensitive areas.
For people with fair skin, a high mole count, or a personal or family history of melanoma, that combination – newly exposed anatomy plus intense, intermittent sun without protection – is exactly the scenario dermatologists worry about.
Tanning Myths and Social Media Misinformation
The fashion shift doesn’t happen alone; it’s intertwined with a broader culture of tanning and sunscreen skepticism, especially among younger adults. Surveys from dermatology organizations show that many Gen Z adults:
- Believe a “base tan” offers meaningful protection from sunburn.
- Prioritize getting a tan over avoiding skin cancer.
- Worry more about supposed harms of sunscreen than about the proven risks of unprotected UV exposure.
Social media amplifies these myths, spreading trends and “hacks” that look fun but come with real health consequences, from deliberate sunburning to DIY tanning methods that ignore basic sun safety. For dermatologists, this means patients may be exposing new areas of skin while simultaneously underestimating the importance of sunscreen.
Why Gluteal Melanomas Are Harder To Treat
Finding melanoma early is always crucial, but location matters – not just for risk, but for treatment and recovery. When a melanoma appears on the buttocks or nearby high‑movement areas, removing it safely usually requires a wide excision that goes deep into the tissue.
Because the gluteal region moves with nearly every step, sit, and bend, surgical wounds there face constant stress, which increases the chances of complications such as wound reopening, infection, and prolonged healing. Patients may need repeated wound care, packing, or even re‑closure procedures, making recovery more painful and time‑consuming than excisions on less mobile areas.
Dr. Hovenic emphasizes that this is something patients should hear about before surgery, not during a difficult recovery. That’s another reason she wants more people to understand why preventing damage in these areas is so important.
The Buttocks: A Classic Self‑Check Blind Spot
Most people can quickly scan their arms, chest, and legs for new spots, but the buttocks and lower back are different – they’re hard to see without mirrors or help. That makes them easy to ignore, even as exposure patterns change.
Dermatologists routinely see patients who have never had a full‑body skin exam and have never closely looked at these areas themselves. Many only discover a problem when a partner, trainer, or primary care provider happens to notice something concerning.
Dr. Hovenic sees this as a gap in everyday health education, not just dermatology care. She points out that primary care practices can play a big role by reminding patients to protect all exposed skin and by facilitating timely referrals when something suspicious appears – even if the spot is in an area people are shy to mention.
Now, Let’s Change The Conversation
At Skin Cancer & Dermatology Institute, we view the rise in sunburns and melanomas on the gluteal region as a chance to update how we talk about sun safety – not to shame people for their fashion choices, but to align protection with reality.
The conversation needs to expand in several ways:
- Include gluteal, lower back, and posterior thigh exposure in routine sun‑safety counseling, especially before vacations, lake days, or pool season.
- Encourage patients to think about sunscreen “following the fabric” – if your swimsuit exposes it, your sunscreen should cover it.
- Normalize full‑body skin exams that truly check all skin, including the buttocks and perianal area, particularly for high‑risk patients.
Dr. Hovenic also sees an opportunity beyond the exam room:
“I think there’s an important opportunity to raise awareness, especially among young women and even swimwear brands, about how changing fashion trends may be shifting sun exposure patterns,” she said. “The reality is, these styles aren’t going away anytime soon, so we need to evolve the conversation around protection.”
In other words, instead of trying to reverse fashion trends, she wants to pair them with smarter protection and better messaging.
Practical Tips
If your swimwear has gotten skimpier, your sun protection needs to get smarter. Here are some easy-to-follow tips:
- Apply sunscreen wherever fabric ends.
Use a broad‑spectrum SPF 30 or higher and cover all exposed skin – including buttocks, lower back, and backs of the thighs – 15 to 30 minutes before you go outside. - Reapply regularly.
Reapply every two hours, and sooner after swimming, sweating, or towel‑drying, paying attention to areas you might forget once you’re settled on the sand or by the pool. - Do full‑body self‑checks.
Once a month, use mirrors or a trusted partner to check hard‑to‑see areas, including the buttocks, lower back, and groin region, for new or changing spots. - Schedule regular dermatology visits.
Ask for a true full‑body skin exam with a board‑certified dermatologist, especially if you have fair skin, a lot of moles, or a history of sunburns or tanning bed use. - Question tanning “tips” online.
Be skeptical of social media advice suggesting that tans are “healthy,” that a base tan protects against burns, or that sunscreen is unsafe; these are myths, and following them can increase your skin cancer risk.
When To Call Your Dermatologist
You should contact a dermatologist promptly if you notice:
- A new spot in an area that’s recently started getting sun (such as where your newer swimwear exposes skin).
- A mole that is changing in size, shape, or color, or looks different from your other spots.
- A lesion that bleeds, crusts, or doesn’t heal over several weeks.
Skin Cancer & Dermatology Institute offers comprehensive medical dermatology care, including thorough skin cancer screening and advanced treatments for melanoma and other skin cancers. Our team is dedicated to helping you enjoy the sun safely, not avoid it entirely.
If you’re wondering whether your current sun habits and swimwear choices put you at higher risk, scheduling a full‑body skin exam is a great place to start. During that visit, you can talk openly about your lifestyle, ask questions about sunscreen options, and get personalized guidance to keep every part of your skin – visible and not‑so‑visible – protected.