Necrosis of the oral mucosa, trachea, or esophagus due to the ingestion of caustic substances. After an assessment of the patient’s airway, breathing, and circulation, the medical team determines the severity of the exposure by physical examination or laryngoscopy. Some patients may require hospitalization for local care and the administration of intravenous steroids, histamine antagonists, and antibiotics. Late complications may include strictures of the affected internal organs.