Hot Oil Burn in a Person with Diabetes, Plus a Black Toe
Baldev Singh, 62, a retired farmer in a village near Moga, has had type 2 diabetes for 11 years on oral medicines; his fasting sugar last week was 186 mg/dL. While frying pakoras at a family function he tips a pan of hot oil over his right forearm and hand. His daughter-in-law applies toothpaste to the burn and ties a cloth over it. Two hours later the area has blisters the size of a rupee coin and some skin has peeled. He refuses hospital because 'it is only a small burn', and the village is 14 km from the CHC on a road that is flooded. He also mentions a corn plaster he has been using on his foot, which has left a black area on his big toe.
1. State the first aid that should have been given, what must never be applied, and assess how severe this burn is.
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Correct first aid, in order:
- Stop the burning - remove the pan, and remove clothing or jewellery from the area unless it is stuck to the skin. A ring left on a swelling hand becomes a tourniquet.
- Cool with cool running water for 20 minutes, starting as soon as possible; up to three hours after injury cooling still helps. Cool the limb, keep the rest of the body warm.
- Cover loosely with a clean, non-fluffy cloth or cling film laid on, not wrapped tight.
- Elevate the limb and give paracetamol for pain. Arrange transport.
Never apply: toothpaste, ghee, turmeric, ink, ice or iced water, cotton wool, or adhesive plaster directly on the burn. Toothpaste and ghee trap heat and introduce infection; ice causes further tissue damage; cotton wool sticks to the wound. The daughter-in-law's toothpaste and tied cloth must be removed and the wound cleaned at the health facility.
Severity assessment:
- Depth: blistering with peeling skin suggests at least partial-thickness (superficial dermal) injury.
- Extent: an adult's whole right forearm is about 4.5% of body surface and the hand about 2%, so this is roughly 6–7% TBSA.
- On area alone, 6–7% in a 62-year-old is not automatically a major burn. But it involves the hand (a functionally critical, possibly circumferential area), it is blistered, it is contaminated with toothpaste, and the patient is diabetic. Those four factors, not the percentage, decide the answer - this needs a health facility.
2. Justify the referral decision with reasoning about diabetes, and list the danger signs the family should watch for.
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Why diabetes changes the decision:
- High blood sugar impairs neutrophil function and the microcirculation, so infection takes hold faster and healing is slower. A 6% burn that would heal in a non-diabetic can deepen and become a chronic ulcer.
- Neuropathy may already be present after 11 years, so he may not feel the full extent of the injury - pain is an unreliable guide here.
- A fasting sugar of 186 mg/dL means control is poor, and the stress of the burn will push it higher, which in turn worsens the wound.
- The hand is at risk of stiffness and contracture if the burn is not dressed and positioned properly.
Any one of these justifies referral; together they make it necessary rather than optional. The flooded road is a transport problem, not a clinical reason to stay home - the answer should solve it (call the 108 ambulance, or ask the ASHA worker to arrange the nearest vehicle) rather than accept it.
Danger signs to take back immediately:
- Increasing pain, or loss of sensation in the hand
- Foul smell, green discharge, or spreading redness with a hard edge
- Fever above 38 °C, shivering
- Black or grey skin at the wound edges
- Reduced urine output, confusion, very high sugar
- Any tightness of the hand that stops him moving the fingers
Also confirm tetanus cover; a burn is a tetanus-prone wound.
3. What should be done about the black area on the big toe, and what foot-care advice would prevent a repeat?
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What it probably is: a corn plaster contains salicylic acid, which is a chemical that dissolves hard skin. On a foot with reduced sensation and poor circulation, it cannot be felt working and it eats through the skin, producing a chemical burn. A black area is dead tissue - this may already be an ulcer, and in a diabetic foot it is a limb-threatening problem, not a cosmetic one.
Action: he must be seen the same day, at the same visit as the burn. The black tissue must not be cut, picked or scrubbed at home; it needs proper debridement and assessment of circulation and sensation. Stop all corn plasters and any 'corn cap' remedies immediately.
Foot-care advice for the family:
- Inspect both feet daily, including between the toes and the soles - use a mirror or ask someone to look.
- Never walk barefoot, even indoors, and never cut corns or calluses with a blade.
- Wear well-fitting shoes with a closed toe; check inside the shoe with the hand for stones or rough seams before wearing.
- Wash and dry feet daily, especially between toes; do not soak for long periods.
- Cut nails straight across, not down the sides; if vision is poor, get help.
- Do not use hot-water bottles or walk on hot sand; neuropathy means heat injury goes unnoticed.
- Control the sugar - this is the single biggest factor in whether the burn and the toe heal.
The answer should link the two problems: the same neuropathy and poor circulation that let the corn plaster burn the toe are what makes the hand burn dangerous.