Thick, hard or yellowish skin
Condition guide
Corns & Calluses
Areas of thickened skin caused by repeated pressure or friction.
For people with diabetes or poor sensation, do not cut or use chemical corn treatments without clinical advice.
Understanding the concern
The visible symptom is only part of the clinical picture.
Areas of thickened skin caused by repeated pressure or friction. A corn or callus can be a sign that footwear, foot shape or walking mechanics are concentrating pressure in one area.
Clinical context
Symptoms and signs
Small changes deserve attention.
Pain under a pressure point
A hard central core or repeated rubbing
Skin breakdown beneath a callus in higher-risk feet
Causes and risk factors
Several factors can come together.
Calluses and corns form where friction or pressure is repeated. They are often a sign that footwear, foot shape or walking load needs attention.
Tight footwear or high-pressure activities
Toe deformity or altered walking pattern
Reduced sensation from diabetes
Previous skin breakdown
When to seek prompt care
Do not wait for symptoms to become severe.
For people with diabetes or poor sensation, do not cut or use chemical corn treatments without clinical advice.
MMC evaluation
Assessment follows the whole clinical picture.
A podiatry review identifies whether the lesion is a callus, corn, wart or another skin issue and checks the pressure source, sensation and circulation.
Relevant care pathways
Care is matched to the condition and the person.
Treat the pressure source: Footwear, padding, orthotics or movement factors may need attention to reduce recurrence.
Provide safe skin care: Professional treatment is safer than blades or medicated plasters in at-risk feet.
Monitor high-risk skin: A callus over a diabetic pressure point may need regular review.
Protect your feet between reviews.
Keep changes protected, avoid unadvised self-treatment and seek advice if symptoms worsen or do not improve.
The next step should be clear.
A timely assessment helps match care to the diagnosis, risk and practical needs of the person.
Common questions
When should I seek urgent care?+
Seek prompt medical advice for spreading redness, a new or worsening wound, discharge, fever, black or blue skin, sudden swelling, or a foot that becomes hot, cold or painful. If you feel very unwell, seek emergency care.
Can I treat this at home?+
Avoid cutting, draining, paring or applying unadvised products. The safest next step depends on your skin health, circulation, sensation and medical history.
What should I bring to my appointment?+
Bring recent reports, your medication list, photographs or details of changes over time, and the footwear you use most often when relevant.
Continue the care journey
The right next step depends on the clinical picture.
Explore the related pathways that may be discussed after assessment.
Make an appointment
A changing corns & calluses deserves a careful clinical review.
Our team can help you understand what needs assessment and what information to bring. Diagnosis and treatment depend on an in-person review.
Specialist assessmentClear next stepsIndividual care planning
Dr. A. Nirupan Chakkaravarthy
Consultant Podiatrist · Limb Salvage Specialist
This guide is for general education and does not replace an in-person assessment.