Understanding the injury. Seeing the person.
Kernicterus is lasting brain injury caused by severe bilirubin toxicity, most often in the newborn period. Its effects can continue throughout a person’s life.
From bilirubin to brain injury
Bilirubin is produced when red blood cells break down. Newborn jaundice is common, but very high bilirubin levels can injure the brain. Early assessment and appropriate treatment matter.
The effects vary
Kernicterus can affect movement and hearing, and may affect eye movements and dental enamel. Each person’s abilities, experiences, and support needs are individual. Movement or speech difficulties should not be assumed to reflect a person’s understanding.
Prevention and treatment are different goals
Timely phototherapy lowers bilirubin and helps prevent injury. It does not repair established Kernicterus. Supportive care aims to manage symptoms and improve daily life; research into reversing established injury remains a separate challenge.
If you are worried about a newborn
Contact a healthcare professional promptly about jaundice, poor feeding, or difficulty waking. Seek emergency medical help for high-pitched crying, unusual arching, a stiff or floppy body, or unusual eye movements. This website is not a clinical service.