In my Patna and Areraj clinics, I see people with diabetes whose blister, crack or small wound has progressed before they seek care. A diabetes-related foot ulcer is serious, but amputation is not inevitable. Early assessment, pressure relief, treatment of infection or poor circulation, and coordinated follow-up can protect the foot.
Quick answer: If you have diabetes and notice a new foot wound, blister, blackening, discharge, spreading redness or a hot swollen foot, do not wait for pain. Keep pressure off the area and arrange prompt medical assessment—urgently if the change is rapid or you feel unwell.
What is a diabetic foot ulcer?
A diabetes-related foot ulcer is a break in the skin of the foot, commonly below the ankle. It often develops through a combination of factors rather than one cause:
- Peripheral neuropathy: reduced protective sensation can make a cut, burn or shoe injury easy to miss. Neuropathy can also cause burning or pain; it does not always mean complete numbness.
- Repeated pressure and foot deformity: prominent bones, altered walking mechanics, callus and poorly fitting footwear can concentrate pressure until the skin breaks down.
- Peripheral artery disease (PAD): reduced blood flow may slow healing and increase the risk of infection and amputation.
- Previous ulcer or amputation, kidney disease, smoking and access-to-care barriers: these can place a person in a higher-risk group.
Diabetes itself does not make every foot wound an ulcer, and not every ulcer is painless. The important point is that a small injury can worsen quickly when sensation, blood flow or infection control is impaired.
Warning signs: when should you seek urgent care?
Check both feet, including the soles and between the toes. Contact a trained clinician promptly for:
- a new cut, crack, blister or open wound;
- redness, warmth, swelling or a new change in foot shape;
- pus, new discharge or an unpleasant smell;
- blue, dusky or black skin;
- a deep wound, visible tissue or suspected exposed bone; or
- a wound that is not improving.
Seek same-day urgent assessment for spreading redness or swelling, blackening/gangrene, rapidly increasing discharge, fever or chills, confusion, marked weakness, or a hot swollen foot that has changed shape. Fever may be absent even when a diabetes-related foot infection is clinically important.
What should a diabetes foot examination include?
The ADA Standards of Care in Diabetes—2026 recommends a comprehensive foot evaluation at least once a year for people with diabetes. People with loss of protective sensation, a previous ulcer or amputation, PAD, deformity or kidney failure need more frequent review; sensory loss or previous ulceration/amputation warrants foot inspection at every visit.
Skin, footwear and structure
The examination includes the skin and nails, callus or pre-ulcerative changes, foot shape, pressure points and footwear. A history of previous ulcers, amputation, Charcot foot, vascular procedures, smoking, kidney disease and current nerve or circulation symptoms also matters.
Sensation: monofilament plus another test
A 10-gram monofilament is gently pressed against selected areas until it bends; it is not used to prick the skin. It identifies loss of protective sensation and should be combined with at least one other neurological test, such as pinprick, temperature or vibration with a 128-Hz tuning fork. Monofilament testing alone should not be presented as a complete diagnosis of early neuropathy.
Circulation
Foot pulses are checked along with other vascular signs. Leg fatigue while walking, rest pain, abnormal colour changes or reduced/absent pulses may lead to ankle-brachial index, toe-pressure/Doppler testing and vascular assessment. A pulse check is a useful screen, not a complete assessment of wound-healing blood flow.
An active ulcer also needs documentation of its site, area and depth, and assessment for infection, ischaemia and possible bone involvement.
Evidence-based diabetic foot ulcer treatment
Treatment is based on the wound and the whole person. Tablets or a dressing alone are rarely enough.
1. Relieve pressure (offloading)
Continued pressure can prevent a plantar ulcer from healing. For an uncomplicated neuropathic ulcer under the forefoot or midfoot, IWGDF guidance recommends a non-removable knee-high offloading device—such as a total-contact cast or an irremovable walker—as first choice when appropriate. Removable devices, felted foam with suitable footwear, or other options may be chosen when infection, ischaemia, wound location, fall risk, access or patient tolerance changes the balance. Offloading should be prescribed and monitored; it is not simply “walking less.”
2. Treat infection only when infection is present
Infection is diagnosed clinically from local or systemic inflammatory signs. Pus, redness, warmth, swelling, tenderness and tissue changes matter; fever is not required. Current IWGDF/IDSA guidance advises not treating a clinically uninfected ulcer with local or systemic antibiotics merely to prevent infection or accelerate healing. When infection is present, antibiotic choice and duration depend on severity, likely organisms, kidney function, cultures when appropriate and whether bone is involved.
3. Assess blood flow early
PAD can prevent healing even with good dressings and glucose control. A person with ulceration plus suspected ischaemia may need toe-pressure/Doppler studies, vascular imaging and timely review for endovascular or bypass revascularisation. Infection together with PAD requires particularly urgent coordination.
4. Debridement and an appropriate dressing
Trained wound-care clinicians may remove callus and dead or devitalised tissue, usually with sharp debridement when appropriate. Debridement is not a do-it-yourself procedure and may be unsafe in a severely ischaemic, non-infected ulcer until perfusion has been assessed. Dressings are selected to control excess fluid and maintain a moist wound-healing environment.
5. Glucose, nutrition and the wider health plan
Reasonable glucose control, smoking cessation, treatment of oedema and other illness, medication review, and adequate energy and protein intake support healing. Poor metabolic control can delay recovery, but it is inaccurate to say that no advanced treatment can work until glucose is “perfect.” Nutrition should be assessed individually; vitamin or protein supplements are not a substitute for diagnosing deficiency or malnutrition.
6. Advanced therapies for selected non-healing ulcers
If an ulcer does not improve despite optimal standard care, an interprofessional team may consider evidence-supported adjuncts such as selected skin substitutes, negative-pressure therapy for certain post-operative wounds, or topical oxygen. These do not replace offloading, infection control, adequate blood flow and regular reassessment.
Saline, Betadine and hydrogen peroxide: what is accurate?
“Use only saline” and “Betadine must never be used” are both too absolute. Saline is commonly used, but cleansing and dressing choice depend on the wound, contamination, infection, available products and the treating clinician’s plan. IWGDF guidance advises against topical antiseptic or antimicrobial dressings solely to promote ulcer healing, because routine benefit has not been established.
For patients, the practical rule is simpler: do not pour Dettol, hydrogen peroxide, povidone-iodine or home remedies into an ulcer without professional advice. Cover a new wound with a clean, non-adherent dressing if available, keep pressure off it, and seek medical assessment promptly.
Daily foot care: do and avoid
| Do | Avoid |
|---|---|
| Inspect the tops, soles, heels and spaces between the toes every day if you are at risk; use an unbreakable mirror or ask for help. | Do not ignore a wound because it is small or painless. |
| Wash gently and dry carefully, especially between the toes; do not soak the feet. | Do not use a heating pad, hot-water bottle or very hot water on feet with reduced sensation. |
| Apply moisturiser to dry skin, while keeping damp spaces between the toes dry. | Do not cut corns or callus with a blade or use chemical corn plasters. |
| Wear well-fitting protective footwear and check the inside before putting it on. | If you have loss of sensation or PAD, do not walk barefoot, in socks alone or in thin-soled slippers—even indoors. |
| Cut nails straight across if it is safe for you to do so; seek trained help if vision, circulation or sensation is poor. | Do not dig into nail corners or self-treat an ingrown nail. |
| Stop smoking/tobacco and attend the foot-review interval advised for your risk level. | Do not start leftover antibiotics or copy another person’s wound treatment. |
Frequently asked questions
Can a diabetic foot ulcer heal completely?
Yes, many ulcers heal with timely, coordinated care. Healing time varies with ulcer depth and location, infection, circulation, pressure relief, kidney health, glucose control and whether the treatment plan can be followed consistently.
If the ulcer does not hurt, is it less serious?
No. Reduced pain may reflect loss of protective sensation. A painless ulcer can still be deep, infected or poorly perfused, while some ulcers remain painful.
Does every diabetic foot ulcer need antibiotics?
No. Antibiotics treat clinically diagnosed infection, not the ulcer itself. A clinician should assess redness, warmth, swelling, discharge, depth and systemic features; fever can be absent.
What should I do when I first notice a wound?
Stop pressure on the area, protect it with a clean non-adherent dressing if available, and arrange prompt assessment. Do not cut the wound, soak the foot or apply caustic chemicals. Rapid change, blackening, spreading redness, fever or marked illness needs urgent care.
How often should feet be checked professionally?
At least annually for people with diabetes. Review is more frequent when neuropathy, PAD, deformity, kidney failure or a previous ulcer/amputation raises risk; some high-risk feet need checks every 1–3 months.
Diabetic foot care in Patna and Areraj
Early review can identify neuropathy, pressure injury, infection or poor circulation before the problem becomes limb-threatening. Learn about diabetes care in Patna, request a clinic appointment, or contact Dr. Pratyush Kumar’s clinic. You may also read why diabetes care goes beyond glucose numbers.
Clinical sources
- American Diabetes Association: Retinopathy, Neuropathy, and Foot Care—Standards of Care in Diabetes 2026
- IWGDF Practical Guidelines on diabetes-related foot disease (2023)
- IWGDF/IDSA Guideline on diabetes-related foot infections (2023)
- IWGDF Offloading Guideline (2023)
- IWGDF Wound Healing Interventions Guideline (2023)
This article is for health education and does not replace an individual medical consultation. Symptoms, test results, medicines, and treatment decisions should be discussed with a qualified clinician.
Seek urgent medical care for severe breathing difficulty, chest pain, confusion, fainting, uncontrolled bleeding, severe dehydration, or rapidly worsening symptoms.