Sudden unexplained death in childhood

Sudden unexplained death in childhood (SUDC) is the death of a child over the age of 12 months which remains unexplained after a thorough investigation and autopsy. There has not been enough research to identify risk factors, common characteristics, or prevention strategies for SUDC.
SUDC is similar in concept to sudden infant death syndrome (SIDS). Like SIDS, SUDC is a diagnosis of exclusion, the concrete symptom of both being death. However, SIDS is a diagnosis specifically for infants under the age of 12 months while SUDC is a diagnosis for children 12 months and older. The causes of SIDS and SUDC are not known but there's a good chance heart arrhythmias and seizures are the main causes. It can happen to any child.
Hypotheses.
Researchers are exploring a possible connection between sudden unexplained death in toddlers, febrile seizures, and hippocampal anomalies.
Epidemiology.
SUDC is rare, with a reported incidence in the United States of 1.2 deaths per 100,000 children, compared to 54 deaths per 100,000 live births for SIDs, however it could be higher or lower SUDC deaths have occurred at the following sites:
The placed and found positions were as follows:
History.
At the SIDS Alliance national convention in Atlanta, GA in 1999 Dr. Henry Krous gave a presentation titled "Post-Infancy SIDS: Is it on the rise?" This led to the beginning of the San Diego SUDC Research Project. The first definition of SUDC was published in 2005 in "Pediatric and Developmental Pathology".