A hot, swollen or red foot
Condition guide
Charcot Foot
A serious diabetes-related foot problem that may cause warmth, swelling and changes in foot shape.
A hot, swollen or red foot in a person with diabetes needs urgent medical assessment, even if it is not painful.
Understanding the concern
The visible symptom is only part of the clinical picture.
A serious diabetes-related foot problem that may cause warmth, swelling and changes in foot shape. Loss of protective sensation can mean that significant injury or joint change is not felt in the usual way. Early assessment is important when a foot becomes warm, swollen or changes shape.
Clinical context
Symptoms and signs
Small changes deserve attention.
A change in foot shape
Warmth compared with the other foot
Often surprisingly little pain when sensation is reduced
Causes and risk factors
Several factors can come together.
Charcot foot is a serious diabetes-related condition in which reduced sensation and repeated loading can lead to bone and joint damage. It can be mistaken for a sprain or infection.
Diabetic neuropathy
Previous ulcer or foot injury
Continuing to walk on a hot swollen foot
Long-standing diabetes
When to seek prompt care
Do not wait for symptoms to become severe.
A hot, swollen or red foot in a person with diabetes needs urgent medical assessment, even if it is not painful.
MMC evaluation
Assessment follows the whole clinical picture.
Prompt clinical assessment is needed. The evaluation may include temperature comparison, sensation and pulse checks, imaging and coordination with specialist services.
Relevant care pathways
Care is matched to the condition and the person.
Act early: A hot, swollen or red diabetic foot with possible Charcot change needs urgent specialist assessment. Avoid weight-bearing until advised by a clinician.
Protect the foot: Immobilisation or offloading may be needed to reduce ongoing damage.
Monitor shape and skin: Follow-up focuses on bone stability, pressure areas, footwear and ulcer prevention.
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 charcot foot 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.