Inquest into the Death of Mamadou Hady DIALLO

39y · Male·multiple injuries from motor vehicle collision

A 39-year-old man with chronic paranoid schizophrenia on a Community Treatment Order died by suicide in a head-on motor vehicle collision. He had been appropriately managed on depot antipsychotic medication with generally good psychiatric care. However, a critical gap occurred when his GP (Dr C.), lacking awareness of psychiatrist-only requirements for commercial licence assessments and unaware of recent medication non-compliance, certified him as fit for a commercial truck driver's licence—a task requiring psychiatric assessment per guidelines. The psychiatrist (Dr A.) had appropriately declined the commercial licence weeks earlier due to concerns about stability and community safety. Although this certification error did not directly cause the death (the deceased was not driving a truck when he died), it highlights systemic failures: inadequate communication between GP and psychiatrist about the fitness-to-drive assessment, unclear guidance to GPs about specialist requirements, and insufficient flagging on assessment forms. Clinically, this case underscores the importance of inter-specialist communication, adherence to assessment guidelines, and recognising that recent psychiatric instability, medication non-compliance, and poor insight are contraindications for high-responsibility roles.