Sudden arrhythmic death syndrome (SADS), also known as sudden adult death syndrome, sudden unexpected/unexplained death syndrome (SUDS) or sudden unexpected/unexplained nocturnal death syndrome (SUNDS), is a sudden unexpected death of adolescents and adults, mainly during sleep. Sudden unexpected death syndrome is rare in most areas around the world. This syndrome occurs in populations that are culturally and genetically distinct and people who leave the population carry with them the vulnerability to sudden death during sleep. Read more