SIDS (Sudden Infant Death Syndrome)

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Sudden Infant Death Syndrome (SIDS), also known as cot death or crib death, is the unexplained death of an otherwise healthy infant, typically during sleep. The exact cause of SIDS is unknown, but it is thought to result from a combination of genetic, physical, and environmental factors. The syndrome primarily affects infants under one year of age, with the highest risk occurring between one and four months.

Signs and symptoms[edit | edit source]

SIDS usually occurs during sleep with no warning signs or symptoms. The infant may appear healthy before going to sleep and show no signs of distress or struggle.

Risk factors[edit | edit source]

While the exact cause of SIDS is unknown, several risk factors have been identified:

  • Sleep position: Infants placed on their stomachs or sides to sleep are at a higher risk of SIDS.
  • Tobacco smoke exposure: Infants exposed to tobacco smoke before and after birth are at an increased risk.
  • Overheating: Over-bundling or covering an infant's head during sleep may increase the risk of SIDS.
  • Soft bedding: Soft mattresses, pillows, and loose bedding increase the risk of suffocation and SIDS.
  • Prematurity and low birth weight: Infants born prematurely or with low birth weight are at a higher risk.
  • Family history: Infants with a family history of SIDS or unexplained infant death are at a greater risk.

Prevention[edit | edit source]

Preventative measures that can be taken to reduce the risk of SIDS include:

Diagnosis[edit | edit source]

SIDS is a diagnosis of exclusion, made after a thorough investigation has ruled out other causes of death. This may include an autopsy, examination of the death scene, and a review of the infant's medical history.

Treatment and prognosis[edit | edit source]

There is no treatment for SIDS, as it is an unexpected and unexplained death. The focus is on prevention and supporting families who have experienced the loss of an infant to SIDS. Grieving parents and family members may benefit from counseling, support groups, or other resources to help cope with their loss.

Epidemiology[edit | edit source]

SIDS is a relatively rare occurrence, affecting approximately 1 in 1,000 live births, though the rate varies by country. The incidence has declined significantly since the early 1990s, largely due to increased awareness of safe sleep practices and public health campaigns.

Research[edit | edit source]

Although the exact cause of SIDS remains unknown, ongoing research aims to better understand the factors that contribute to its occurrence. Studies have focused on genetic factors, brain abnormalities, and respiratory control, among other areas. It is hoped that continued research will eventually lead to better prevention strategies and a further reduction in the incidence of SIDS.

See also[edit | edit source]

Sleep apnea Sudden unexpected death in epilepsy (SUDEP) Child mortality

References[edit | edit source]


External links[edit | edit source]

  • Safe to Sleep Campaign - U.S. National Institute of Child Health and Human Development
  • SIDS and Kids - Australian organization dedicated to the prevention of SIDS
  • The Lullaby Trust - UK charity focused on reducing the risk of SIDS and supporting bereaved families
SIDS (Sudden Infant Death Syndrome) Resources
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Contributors: Prab R. Tumpati, MD