Neuroblastoma, a type of cancer, can cause Horner syndrome in some kids. It's called congenital Horner syndrome when a baby is born with it. Only 5% of cases are congenital. Babies can get Horner ...

In about 5 percent of affected individuals, this disorder is present at birth (congenital). Abnormalities in the eye area associated with Horner’s syndrome generally do not affect vision or health.