Blue Baby Syndrome


Blue baby syndrome or cyanosis is shown as blue or blue/grey skin on the face or body. This shows that the body is not getting enough oxygen in the blood. Patients may also have cold to the touch hands or feet as well as blue tinged lips.

Cyanosis is caused by several things, such as

  • lungs - like asthma or pneumonia
  • airway - choking, or croup
  • heart
  • seizures (fits) that last a long time


Babies who are born "blue" normally have a heart defect, commonly know as a "hole in the heart" which causes deoxygenated blood to mix with blood from the lungs meaning the blood that reaches the heart had less oxygen then normal. There are several heart defects which produce this syndrome. There are also some causes which are not related to heart conditions which can cause "blue" babies.

For more information about congenital heart diseases in babies and children, visit the Children's Heart Federation.