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Caustic ingestion is a time-critical emergency in which acids or alkalis damage the mouth, pharynx, oesophagus and stomach. The injury may continue after the initial exposure, even when oral burns appear minor. Early assessment must therefore account for airway risk, the substance involved, the volume swallowed and the patient’s symptoms.
In Australia, common sources include drain cleaners, oven products, pool chemicals and concentrated dishwasher agents. Children may encounter these products while exploring cupboards, while adults can be exposed during cleaning, maintenance or workplace tasks. Prompt first aid and coordinated specialist care can reduce avoidable complications such as perforation, strictures and nutritional problems.
Symptoms may include drooling, painful swallowing, vomiting, chest or abdominal pain, hoarseness, coughing and breathing difficulty. Burns around the lips or mouth can support the diagnosis, but their absence does not exclude significant oesophageal injury. A patient who looks stable can deteriorate as swelling develops.
The product container, safety data sheet or a clear photograph can help clinicians identify the chemical and its concentration. Do not rely on colour or brand name alone. In Australia, the Poisons Information Centre can be contacted on 13 11 26, while breathing difficulty, collapse or severe pain requires an immediate call to 000.
Remove the person from the source and rinse contaminated skin or eyes with copious running water. If a caustic substance has been swallowed, do not induce vomiting, give activated charcoal or attempt chemical neutralisation with vinegar, bicarbonate or another household product. These actions can create further heat, aspiration or tissue injury.
Avoid offering food or drink when swallowing is painful, consciousness is reduced or airway compromise is suspected. Keep the product packaging available for emergency staff. This approach is particularly important in busy homes in Melbourne, Brisbane and Perth, where drain and barbecue-cleaning products may be stored in garages, laundry areas or outdoor sheds.
Airway evaluation takes priority when there is stridor, voice change, facial swelling, persistent coughing or respiratory distress. Early involvement of anaesthesia, emergency medicine, gastroenterology and surgery is appropriate for serious exposures. Intubation can become more difficult as oedema progresses, so a reassuring initial examination should not delay reassessment.
Endoscopy is generally used to define the extent of mucosal damage after the patient has been stabilised. The timing depends on symptoms, airway status and local expertise. Contrast imaging or CT may be required when perforation, deep tissue injury or mediastinal involvement is suspected. Forceful blind nasogastric tube placement should be avoided.
Endoscopic findings range from mild erythema and oedema to circumferential ulceration, necrosis and perforation. The grade helps determine observation, feeding, intensive monitoring and surgical consultation. Severe pain, fever, tachycardia, metabolic acidosis or guarding should raise concern for transmural injury rather than being attributed to simple indigestion.
Routine corticosteroids and prophylactic antibiotics are not suitable for every patient. Their use depends on the injury pattern, infection risk and specialist judgement. Surgery is considered for perforation, uncontrolled sepsis, necrosis or progressive complications. Treatment should follow evidence-based protocols within the hospital’s toxicology and gastrointestinal services.
After the acute phase, clinicians monitor hydration, nutrition and the ability to swallow. Oesophageal strictures can develop weeks later, causing food sticking, regurgitation or progressive weight loss. Endoscopic dilation may restore swallowing, sometimes requiring repeated sessions. Severe cases may need enteral feeding or reconstructive surgery.
Reflux symptoms can complicate recovery and should be distinguished from a fixed narrowing or motility disorder. Selected patients may require pH or impedance monitoring; background reading on pH monitoring in reflux can help explain how persistent symptoms are investigated. Follow-up should also address psychological distress, medication safety and prevention of another exposure.
Australian households and workplaces operate under product labelling and chemical controls connected with the Poisons Standard and consumer safety requirements, yet safe storage remains essential. Keep corrosive products in original containers, secured away from children, and never decant them into drink bottles. Rural patients may face longer transfers to endoscopy or surgery, making early ambulance coordination especially important.
| Clinical situation | Immediate priority | Typical next step |
|---|---|---|
| Mild symptoms, stable airway | Remove exposure and obtain poison advice | Emergency assessment and observation |
| Drooling, dysphagia or voice change | Protect and reassess the airway | Urgent specialist review and endoscopy planning |
| Severe chest or abdominal pain, shock or acidosis | Suspect deep injury or perforation | CT, surgical consultation and critical care |
| Later dysphagia or food obstruction | Consider stricture formation | Gastroenterology review and possible dilation |
Useful prevention and response measures include:
The practical priority is simple: secure the airway, avoid harmful home remedies, identify the chemical and obtain urgent specialist assessment when symptoms suggest significant injury.