Sudden unexpected death syndrome

Sudden unexpected death syndrome (SUDS), sudden unexpected nocturnal death syndrome (SUNDS), sudden adult death syndrome (SADS), or bed death is sudden unexpected death of adolescents and adults, many 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. Sudden unexplained death syndrome was first noted in 1977 among Hmong refugees in the US. The disease was again noted in Singapore, when a retrospective survey of records showed that 230 otherwise healthy Thai men died suddenly of unexplained causes between 1982 and 1990: In the Philippines, where it is referred to in the vernacular as bangungot, which means "to rise and to moan in sleep" and in Japan it is known as Pokkuri which means “sudden and unexpectedly ceased phenomena”.