What causes Dandy-Walker syndrome?

What causes Dandy-Walker syndrome?

Dandy-Walker happens when there’s an issue with the development of the baby’s cerebellum in the womb. In some cases, a genetic mutation (change) may cause the condition.

Some people with Dandy-Walker have chromosomal conditions, such as extra or missing pieces of chromosomes. Chromosomes are packages of DNA that carry genes. Dandy-Walker syndrome may also happen as part of a genetic disorder that includes several birth defects (congenital conditions).

Other potential causes of Dandy-Walker may include:

• Certain viruses that pass from the birthing parent to baby during pregnancy.
• Exposure to certain toxins or medications during pregnancy.
• The birthing parent had diabetes.