When most people think about managing diabetes, they think about blood sugar levels, diet, and medication. But there’s something that often gets left out of the conversation. What is that, you might ask? The skin, which happens to be the body’s largest organ, and one of the first places diabetes makes itself known.
At Florida Dermatology and Skin Cancer Centers (FLDSCC), we see it regularly: patients who come in for what seems like a routine rash, persistent itch, or a wound that just won’t heal, and after a closer look, we’re prompting them to follow up with their primary care physician for diabetes consultation. The connection between diabetes and skin health is significant, and we’d like to shed light on the topic.
Whether you’ve been living with Type 1 or Type 2 diabetes for years or you’re newly diagnosed, here’s what our team at FLDSCC wants you to know about protecting your skin.
Why Diabetes Affects Your Skin
Elevated blood glucose over time affects the body in layers, literally. High sugar levels can damage small blood vessels, reducing circulation to the skin. They also impair nerve function, which means you may not feel cuts, pressure, or irritation the way you should. On top of that, diabetes can reduce the skin’s ability to retain moisture and slow the immune response, making infections harder to fight off and wounds slower to heal.
The result is skin that is drier, more vulnerable, and less resilient than it used to be.
What We See in the Exam Room
You might be surprised how many patients come to us with complaints that seem minor. Whether it’s an itch that won’t quit, a patch of skin that looks a little off, or a blister that seemed to appear out of nowhere; in diabetic patients, these everyday concerns are often more meaningful than they appear.
Here are some of the most common things we see:
Dry, Itchy Skin: This is one of the most frequent complaints we see. Poor circulation and high blood sugar both interfere with the skin’s ability to stay hydrated, leaving it tight, flaky, and uncomfortable. It’s easy to dismiss it as just dry skin, but in diabetic patients, dryness can quickly progress to cracking. Cracked skin can be an open door for infection.
Skin Rashes: Many patients with diabetes develop rashes on various parts of the body. These can look like red, irritated patches and are often triggered by the combination of dry skin, friction, and reduced immune response. They tend to show up in skin folds like under the arms, beneath the breasts, or in the groin where warmth and moisture create the perfect environment for irritation and infection to take hold.
Darkened Skin in the Creases: This is particularly common in patients with Type 2 diabetes or prediabetes and is a subtle darkening and slight thickening of the skin in places like the back of the neck, the armpits, or the groin. It can look like a dark, velvety, thick patch that won’t fade. This is often one of the earliest visible signs that the body is struggling with insulin, and it’s something we take note of right away.
Blisters: Some diabetic patients develop blisters on their hands, feet, legs, or arms that look alarming but aren’t painful. They can resemble burn blisters even though there’s no injury to explain them. While they typically heal on their own, their appearance is a signal worth discussing with both your dermatologist and your primary care provider. Since diabetes can compromise your immune system, you should never pop these blisters.
Slow-Healing Wounds and Sores: Hallmark concerns include a cut that takes weeks to heal, a sore spot on the foot that just keeps hanging around, or other frequent skin injuries that don’t properly heal. Reduced circulation and impaired immune function mean the skin’s normal repair process is working at a disadvantage. What might heal in a week for someone without diabetes can linger for a month or more, and that period of vulnerability is when complications can develop.
Recurring Skin Infections: Fungal and bacterial infections are significantly more common in people with diabetes. We see a lot of fungal overgrowth in skin folds. This causes redness, itching, and an unpleasant odor. Bacterial infections like staph can also flare up more frequently and more severely in people with diabetes. High blood sugar essentially creates a more hospitable environment for these organisms to thrive.
The common thread through all of these? They’re easy to explain away. But in the context of diabetes, they’re worth paying attention to and worth bringing up at your next dermatology appointment.
Our Top Skin Care Recommendations for Patients with Diabetes
1. Moisturize Daily
Dry skin is one of the most universal skin complaints among our diabetic patients. When the skin barrier breaks down, even minor cracks can become entry points for bacteria. We recommend applying a rich, fragrance-free moisturizer immediately after bathing, while the skin is still slightly damp. Look for ingredients like ceramides, glycerin, or urea – all of which help repair and reinforce the skin barrier.
Avoid fragrances, which can cause irritation, try opting for an ointment or cream over lotion, and steer clear of products with alcohol high on the ingredient list, which are drying.
2. Don’t Skip Your Feet
Foot care is non-negotiable. Because nerve damage can dull sensation in the feet, a small blister or cut can go unnoticed, and in a diabetic patient, that small wound can escalate quickly. We advise patients to inspect their feet daily, ideally with a mirror for hard-to-see areas. Look for redness, swelling, calluses, blisters, or any breaks in the skin. Moisturize the feet every day, but avoid applying lotion between the toes, where moisture can encourage fungal growth.
Wear properly fitting socks and shoes.
3. Keep Your Toenails Trimmed and Tidy
This small habit makes a bigger difference than most people realize. Long toenails can press against the skin and cause irritation, and as they grow, they can begin to lift slightly, creating a gap underneath where moisture and bacteria can settle in. It’s an easy setup for an infection, and in diabetic patients, foot infections are something we never want to take lightly.
Trim your toenails straight across rather than rounding the edges and keep them short enough that they’re not rubbing against your shoes or neighboring toes. If reaching your feet is difficult, or if you’re not comfortable trimming on your own, a foot specialist or podiatrist can handle this for you on a regular basis.
4. Use Gentle Cleansers and Lukewarm Water
Harsh soaps strip the skin’s natural oils, which are already compromised in many diabetic patients. Choose mild, pH-balanced cleansers and avoid hot water when bathing. Lukewarm is best. Pat your skin dry rather than rubbing, and give extra attention to skin folds, which should be thoroughly dried to prevent fungal overgrowth.
5. Protect Your Skin from the Sun
Diabetic skin can be more sensitive and slower to recover from sun damage. A broad-spectrum sunscreen with an SPF 30 or higher should be applied generously and reapplied every two hours when outdoors. This should be part of your everyday routine, not just on beach days. Sun damage compounds the skin’s vulnerability and slows its ability to heal, both of which are already concerns for diabetic patients.
6. Treat Cuts and Scrapes Promptly
Minor wounds require more attention when you have diabetes. Clean any cut or scrape right away with mild soap and water, apply an antibiotic ointment, and cover it with a clean bandage. Monitor it closely for signs of infection, including increasing redness, warmth, swelling, or discharge. If a wound isn’t showing signs of healing within a few days, contact us or your primary care provider or dermatologist.
7. Address Skin Infections Early
Itching, redness, or unusual odor in skin folds can signal a fungal infection. Recurring rashes or sores that seem to come back in the same spots are worth investigating rather than repeatedly self-treating. Additionally, if you notice changes in your nails or the skin under or around your nails, you should see your dermatologist for medical care. As we know, early intervention can prevent larger problems later, so don’t put off seeing your dermatologist when you notice any of these changes.
8. Keep Blood Sugar as Stable as Possible
We say this not to repeat what your endocrinologist has told you, but because we understand that well-controlled blood sugar correlates directly with healthier, more resilient skin. The relationship runs both ways, too. Good skin care supports your overall health, and good metabolic control supports your skin.
When to Make an Appointment With Your Dermatologist
You should see a dermatologist if you notice:
- Persistent dryness, itching, or rashes that don’t resolve with basic care
- Any new darkening or textural change in the skin, especially in skin folds
- Blisters that appear without a clear cause
- A wound, sore, or cut on the feet or legs that isn’t healing within a normal timeframe
- Recurring skin or nail infections
- Any skin change that concerns you
Early intervention is always better than waiting. Many of the complications we treat could have been managed more simply or avoided altogether with an earlier visit.
Final Thoughts From the FLDSCC Team
Living with diabetes means managing a complex, whole-body condition. Your skin is part of that equation, and it deserves the same intentional care as your diet, your medications, and your annual labs. Our team is here to be a partner in that care. Whether it’s helping you make sense of a new skin change, treating a stubborn infection, or building a simple daily routine that keeps your skin as healthy as possible.
Have questions about your skin and diabetes? We’d love to see you. Call our office to schedule a comprehensive skin evaluation.
*This blog post is intended for general educational purposes and does not constitute medical advice. Please consult your dermatologist or primary care provider for personalized guidance.
About Us
FLDSCC’s team of providers are experts in diagnosing and treating skin cancers; skin conditions and diseases such as eczema, rosacea, dry skin, rashes, and warts; and chronic skin diseases and infections, while simultaneously tackling aging skin, wound care, and a multitude of other skin, hair, and nail concerns.
Several FLDSCC providers are fellowship-trained in Mohs micrographic surgery, an effective state-of-the-art treatment for most types of skin cancers. Mohs surgery involves minimal discomfort and encourages the greatest preservation of healthy tissue, which means less risk of scarring and superior cosmetic results.
FLDSCC has many convenient locations throughout the state. For more information, visit www.fldscc.com, or call (855) FLD-SKIN.
