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Neurology
Sys. Review
Opioid flexion phenotype is a descriptive term for sustained forward flexion in fentanyl exposure
Opioid Flexion Phenotype Helps Identify Potential Toxicity in Overdoses
This narrative review describes the opioid flexion phenotype in patients with fentanyl exposure. The authors clarify that this posture is a …
A specific forward-leaning posture in opioid use may signal potential toxicity and help first responders prioritize life-saving ventilation.
Frontiers
Sep 10, 2026
Infectious Disease
Case series identifies 38 medetomidine-involved opioid overdoses in Chicago
Chicago health officials identify overdoses involving veterinary sedative mixed with opioids
A case series in Chicago identified 38 individuals with medetomidine-involved opioid overdoses (12 confirmed, 26 probable).
Chicago officials warn that a veterinary sedative is now mixed with opioids in street drugs, causing 38 overdoses in the city.
CDC
Apr 4, 2026