Callus vs Corn: What’s the Difference and How to Treat Each Safely

Lamar| The Foot Aftercare Institute
Mar 3
5 min read

Updated: 4 days ago

Thickened skin on the feet is a common issue many people experience, but not all hard skin is created equal.

Calluses and corns are both types of thickened skin that result from pressure and friction, yet they develop differently, have distinct characteristics, and require different treatment approaches.

Understanding the difference between a callus and a corn is crucial to treating and preventing these common foot issues effectively.

What Is a Callus?

A callus is an area of thickened skin that forms in response to repeated pressure or friction.

It serves as the body’s natural defence mechanism, protecting the deeper layers of the skin and underlying tissues.

Characteristics of Calluses

Shape and Size: Calluses are usually broad and flat. They can cover a larger area of skin.

Colour: They typically appear yellowish or slightly grey.

Location: Calluses are often found on weight-bearing areas of the foot, such as the heel and the ball of the foot.

Pain Level: Generally, calluses are painless unless they become excessively thick.

Close-up of a callus on the heel showing thickened yellowish skin in a weight bearing area. — Calluses typically develop on high-pressure areas such as the heel or ball of the foot.

Common Causes

Calluses commonly develop due to several factors:

Tight Footwear: Shoes that do not fit properly can cause friction.

High Activity Levels: Frequent activities, such as running or standing for long periods, can contribute.

Abnormal Foot Alignment: Conditions like flat feet can lead to uneven pressure distribution.

Walking Barefoot: Hard surfaces can exacerbate friction on the feet.

If you're interested in a deeper breakdown of callus causes, check out this helpful resource: Callus Causes: Why Hard Skin Forms on Your Feet.

What Is a Corn?

A corn is a smaller, more concentrated area of thickened skin compared to a callus.

Unlike calluses, corns contain a hard central core that can press into the deeper layers of skin, which is why they can be painful.

Characteristics of Corns

Size: Corns are typically small and circular.

Shape: They are raised with a defined centre.

Pain Level: Corns often cause pain, particularly when pressed.

Location: Corns commonly occur on or between the toes.

Close-up of a corn on the toe showing a small circular lesion with a hardened central core

Corns are smaller than calluses and often form from focused friction or pressure

Corns develop due to different factors than calluses:

Tight or Narrow Shoes: Shoes that compress the toes can lead to corns.

Toe Deformities: Conditions like hammertoes can create uneven pressure points.

Overlap of Toes: If one toe overlaps another, it may lead to friction and corn formation.

For further information on different types of corns, visit: Foot Corn Types Explained.

Callus vs Corn: Side-by-Side Comparison

Understanding the differences between a callus vs corn can help you identify and treat them appropriately. Here’s a quick overview:

Feature	Callus	Corn
Size:	Larger	Smaller
Shape	Flat and Spread Out	Round with Hard Core
Pain	Usually Painless	Often Painful
Location	Heel, Ball of Foot	Toes
Cause	Broad Pressure	Focussed Friction

This simple comparison highlights how calluses and corns are not the same and underlines the importance of targeted treatment.

Side-by-side comparison of a callus and a corn on the foot showing diffuse thickened skin versus a small circular leison with a central core — Callus vs corn comparison - Calluses are broader areas of thickened skin, while corns are smaller with a central hardened core

Why People Confuse Them

Both calluses and corns share several similarities, leading to confusion for many individuals. Both conditions:

Form due to friction or pressure

Appear yellowish

Involve thickened skin

However, treatment for each condition differs, especially when pain is a factor.

If you’re unsure whether you have corns, consider checking out this guide: What Causes Corns on Feet? What Causes Corns on Feet?.

When It’s Not a Callus or Corn

In some cases, thickened skin on the feet may not be a callus or corn.

It's essential to recognise other conditions that could resemble these issues, such as:

Plantar Warts: Caused by a virus and feature small black dots.

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Thickened Scar Tissue: This may happen after an injury or surgery.

Infected Callus: If you notice redness or discharge, it may be infected.

Diabetic Pressure Lesion: These require special attention due to the risk of diabetes.

If you have concerns about hard skin over scar tissue, refer to this guide: Callus Over Scar: Why It Happens and How to Fix It Safely.

If you notice symptoms like redness, swelling, or discharge, consider reading this resource: Infected Foot Callus: Symptoms, Treatment & When to See a Podiatrist.

For individuals with diabetes, it's critical never to ignore thickened skin on your feet; see: Diabetic Foot: Warning Signs and Prevention.

Illustration showing tight footwear compressing toes and contributing to corn and callus formation. — Ill-fitting shoes can increase friction and pressure, contributing to both corns and calluses

How to Treat a Callus Safely

Treating calluses focuses on reducing pressure and softening the skin.

Here are some effective treatment options:

Wear Supportive Footwear: Choose shoes that provide adequate support and cushioning.

Reduce Friction: Consider using orthotic inserts or pads to redistribute pressure.

Gentle Filing: Use a pumice stone or foot file for gentle filing; avoid aggressive cutting, as it can lead to injury.

Moisturising: Applying urea-based moisturisers can help soften the thick skin.

For proper application guidance of products, refer to this article: How to Use Urea Cream and Silicone Gel Properly.

Diagram illustrating how diffuse pressure causes calluses and localised friction causes corns on the foot — Repeated pressure leads to calluses, while concentrated friction can cause corns to form

How to Treat a Corn Safely

Treating corns requires redistributing pressure and protecting the area.

Consider these treatment options:

Wider Footwear: Choose shoes with a broader toe box to reduce compression.

Toe Padding or Separators: Use cushioning products to alleviate pressure between toes.

Protective Cushions: These can shield affected areas and provide comfort.

Professional Debridement: If corns are painful, a podiatrist can safely remove them.

Avoid cutting corns at home, as this can result in complications. If pain persists, find out when you should see a podiatrist for foot problems: When to See a Podiatrist for Foot Problems.

When to Seek Professional Help

It’s essential to seek professional care if you notice any of the following issues:

Severe pain in the affected area
Bleeding or cracking skin
Redness spreading beyond the callus or corn
Fluid leakage from the affected area
Diabetes or circulation issues

Early intervention can help prevent complications and provide lasting relief.

Frequently Asked Questions

Q) Is a corn worse than a callus?

A) Corns are often more painful because their hard central core presses into deeper tissue.

Q) Can a callus turn into a corn?

A) Not directly, but focused pressure on a callus can lead to the formation of a corn.

Q) Should I cut them off at home?

A) No. Cutting thickened skin can increase the risk of infection and complications.

Q) Do calluses and corns go away on their own?

A) They may improve if the pressure is removed, but without addressing the underlying cause, they are likely to return.

illustration of someone reading the "foot aftercare guide bundle" from The Foot Aftercare Institute — Further reading from the Foot Aftercare Institute