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HardEmergency medicine & Acute presentations

A 32-year-old man presents with agitation, hyperthermia (39.5°C), and dilated pupils after ingesting unknown drugs at a party. He is hypertensive, tachycardic, and has severe muscle rigidity. Suspect serotonin syndrome or neuroleptic malignant syndrome. Which feature is more specific to serotonin syndrome?

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