The patient presents as critically ill with profound decreased level of consciousness and recurrent seizures. A history of substance misuse, combined with tachycardia, dilated pupils, and seizure activity, strongly suggests intoxication, particularly with stimulant substances such as cocaine or amphetamines. The non–tonic-clonic nature of the seizures and the presence of pink nasal secretions may indicate recent intranasal drug use. Other differential diagnoses that must be considered include intracranial hemorrhage, hypoxia, metabolic disturbances, or central nervous system infection, although normal blood glucose and absence of trauma make some causes less likely. Prehospital management should prioritize airway protection and respiratory support, despite the patient’s spontaneous breathing. A Glasgow Coma Scale score of 3 represents a high risk for airway compromise, and continuous monitoring with readiness for advanced airway management is essential. Supplemental oxygen should be administered to ensure adequate oxygenation, and the patient should be placed in a lateral recovery position when feasible. If further seizures occur, prompt administration of anticonvulsant medication in accordance with local protocols, typically benzodiazepines, should be considered. Intravenous access should be established early, and the patient should be closely monitored with attention to respiratory status, circulation, level of consciousness, and temperature. Rapid transport to hospital is essential, with early pre-alert to the receiving facility regarding a critically ill patient with suspected severe intoxication and ongoing seizure activity.