Cracked heels, medically known as heel fissures, are a common foot problem that can cause discomfort or even pain. Many people experience this issue, especially when their feet become extremely dry. The skin around the heel becomes thick, dry, and callused, leading to cracks that can catch on socks and even cause bleeding in severe cases. This condition not only affects the aesthetics of the feet but can also lead to infections if not treated properly.
Understanding what causes cracked heels is essential to both treat and prevent them. From everyday habits to underlying medical conditions, a variety of factors can contribute to the development of this uncomfortable condition. In this article, we’ll explore the most common causes of cracked heels, the role of environmental factors, and what steps you can take to maintain healthy, smooth feet.
1. What’s Actually Happening When Your Heels Crack
When your heels crack, the skin on your feet has become excessively dry and thickened. This thickening, known as callus formation, occurs as a protective response to pressure and friction. The skin loses its elasticity and becomes rigid, which makes it more susceptible to cracking under pressure. These cracks, or fissures, can be superficial or deep, depending on the severity of the dryness and the thickness of the callus.
The average thickness of callused skin on the heel can range from 1 to 3 millimeters, while healthy skin is typically around 0.5 millimeters. When the skin loses its natural moisture content, which normally ranges between 10-30%, it becomes less pliable and more prone to splitting. This is why maintaining adequate hydration in the skin is crucial to prevent cracking.
2. Why Dry Skin Targets Your Heels First
The heels are particularly prone to dryness and cracking due to their structure and function. They bear the brunt of the body’s weight and are under constant pressure, especially during walking and standing. This pressure can cause the skin to expand sideways, leading to cracking.
Additionally, the heels have fewer oil glands compared to other parts of the body, which means they naturally have less moisture. With less oil to keep the skin supple, the heels are more susceptible to drying out. This is why the skin on the heels can become dry and cracked more easily than other areas.