fig1

From: Advances in sudden unexplained death: novel insights into technical innovations and their applications in forensic investigation

Figure 1. Venn diagram illustrating the relationships among SUD, SCD, SADS, SUDEP, and SIDS. The diagram highlights the age-based distinction (SIDS vs. SUD), the mechanism-based classification (SCD vs. SADS), and the overlap between SUDEP and SADS when arrhythmic mechanisms are involved. SUD: Sudden unexplained death; SCD: sudden cardiac death; SIDS: sudden infant death syndrome; SUDEP: sudden unexpected death in epilepsy; SADS: sudden arrhythmic death syndrome.