Corns vs calluses: what’s the difference

Corns and calluses are common foot problems and are often used interchangeably, even though they are not the same. Both involve areas of thickened skin and are usually related to pressure or friction, but they develop in different ways and can cause different levels of discomfort.

For many people, these skin changes are a gradual nuisance rather than a sudden problem. However, they can become painful, affect walking, or lead to further issues if not properly understood. Knowing the difference between corns and calluses can help explain why they develop and why some areas of hard skin are more uncomfortable than others.

What are corns and calluses?

Calluses are areas of thickened skin that develop over time in response to repeated pressure or friction. They tend to be broader, flatter, and less well-defined, and are commonly found on the soles of the feet, particularly under the ball of the foot or the heel. Calluses are usually not painful, although they can become uncomfortable if they become very thick.

Corns are smaller, more localised areas of hard skin that often develop over bony prominences or pressure points, such as the tops or sides of toes. They tend to have a more defined centre and can press into deeper layers of skin, which is why corns are more likely to be painful, especially when walking or wearing shoes.

Why do corns and calluses develop?

Both corns and calluses form as a protective response. When the skin is repeatedly exposed to pressure or rubbing, it thickens to protect the underlying tissues. Problems arise when that pressure is excessive, uneven, or sustained over long periods.

Common contributing factors include foot shape, the way weight is distributed across the foot, and how the foot functions during walking. Areas that take more load or experience repeated rubbing are more likely to develop thickened skin.

Footwear also plays a role. Shoes that are too tight, too loose, or poorly shaped for the foot can increase pressure in specific areas. Over time, this repeated stress encourages the skin to harden in those spots.

What usually helps?

Managing corns and calluses generally involves an assessment with your podiatrist. The podiatrist can often remove the corn or callus. Long-term management involves reducing the pressure or friction that caused them to form in the first place. This often requires your podiatrist to look beyond the skin itself and consider how the foot is functioning inside footwear.

Common approaches may include:

• Identifying pressure points or areas of increased load
• Addressing footwear fit and shape
• Supporting more even weight distribution across the foot
• Managing underlying foot or toe position issues

Because corns and calluses are a response to pressure, addressing the underlying cause is usually more effective long term than focusing on the hard skin alone.

When should further advice be considered?

Further podiatry assessment is usually recommended if areas of hard skin are painful, recurring, or interfering with walking or daily activities. Increasing discomfort, changes in skin colour, or breakdown of the skin should also be assessed.

People with diabetes, circulatory issues, or reduced sensation in the feet should be particularly cautious and seek advice early, as even minor foot problems can progress more quickly in these situations.

Key points to remember

• Corns and calluses are both caused by pressure and friction
• Calluses are broader and usually less painful
• Corns are smaller, more defined, and more likely to cause pain
• Foot structure and footwear often contribute to their development
• Addressing pressure is usually key to long-term management

This article is for general information only and is not intended as a substitute for individual assessment or medical advice.

Rob Hanley, Clinic Director