Case Report: A case of subarachnoid hemorrhage secondary to elbow intravenous injection of diquat poisoning in young male

This case suggests that a massive dose of intravenous DQ poisoning can lead to severe central nervous system injury and rapid death. Based on the clinical presentation and existing literature, the mechanism may be related to the extremely high concentration of DQ rapidly crossing the blood-brain barrier and entering brain tissue, thereby causing tissue cell damage or reduction-oxidation (redox) cycle. This highlights that we need to be highly vigilant against the clinical hazards caused by the unconventional poisoning pathway of DQ.