You slip off your sandals at the end of the day and notice it again: a rough, yellowish edge around your heel, and maybe a split that stings when you step down. Cracked heels are easy to dismiss as a cosmetic nuisance, yet they can be painful, catch on socks, and sometimes bleed. Understanding why they happen is the first step toward healing them and keeping them from coming back.
What Are Cracked Heels?
Cracked heels, also called heel fissures, are deep splits in the thick skin around the rim of the heel. They begin as dry, rough patches and, if left alone, can deepen into painful cracks that extend into the lower layers of skin. The skin on your heels is naturally thicker than elsewhere and has few oil glands, so it depends heavily on moisture and flexibility to stay intact.
Why Do Heels Crack?
The most common cause is dry skin combined with pressure. When you stand or walk, your body weight pushes the fat pad under your heel outward. If the surrounding skin is dry and thickened, it cannot stretch, and it splits. Several factors contribute:
- Dry air, cold weather, and low humidity, which are common in Colorado
- Prolonged standing, especially on hard floors
- Open-back shoes or sandals that let the heel expand sideways
- Hot showers and harsh soaps that strip natural oils
- Calluses that build up and harden over time
- Being overweight, which increases pressure on the heel pad
Who Is Most Affected?
Anyone can develop cracked heels, but some people are more prone. Older adults tend to have drier skin with less elasticity. Medical conditions can also play a role, including diabetes, hypothyroidism, eczema, psoriasis, and athlete's foot (a fungal infection). Nerve damage from diabetes can reduce sweating in the feet, leading to very dry skin, and reduced sensation may let a crack go unnoticed.
Why Cracked Heels Matter
A small crack in the heel can become a doorway for infection, so it deserves more attention than its size suggests. Deep fissures can bleed, become inflamed, and let bacteria or fungi enter the skin. In people with diabetes or poor circulation, even a minor wound can heal slowly and lead to serious complications. Pain from deep cracks may also change how you walk, which can strain the ankles, knees, and hips.
What the Evidence Suggests
Dermatology and podiatry literature consistently supports moisturizers containing keratolytic ingredients such as urea and salicylic or lactic acid. These help soften and gradually thin thickened skin while drawing water into it. Studies of urea-containing creams in dry, scaly skin show improvements in hydration and skin smoothness. Regular, consistent use matters more than any single product, and results usually build over a couple of weeks.
Practical Home Care Tips
- Apply a urea-based or lactic acid moisturizer to clean, dry feet once or twice a day.
- Seal in moisture with a thin layer of petrolatum-based ointment, especially at bedtime.
- Gently smooth thickened skin with a foot file or pumice stone after bathing, never on dry skin.
- Wear supportive, closed-heel shoes and avoid going barefoot or wearing worn-out open-back sandals.
- Limit long, hot showers and use mild, fragrance-free soap.
- Drink enough water and check your feet daily, particularly if you have diabetes.
Avoid cutting or digging at cracks yourself, and skip medicated corn removers, which can burn healthy skin. Do not peel skin from open fissures.
When to See a Podiatrist
Professional care is a good idea if your heels are bleeding, very painful, red, warm, or draining, or if home care has not helped after a couple of weeks. If you have diabetes, circulation problems, or numbness in your feet, have even mild cracks checked promptly. A podiatrist can safely remove thickened skin, assess for fungal infection or other underlying causes, treat open fissures, and recommend footwear or padding to reduce stress on the heel.
Deann Hofer Ogilvie, DPM, provides foot and ankle care at our Lafayette, CO office. If cracked heels are causing you pain or worry, call (303) 537-4714 to schedule a visit. Office hours are Monday through Friday, 9am to 3pm.