What happens to the chromosomes when a baby has hydrocephalus?

There is typically no direct association between hydrocephalus and chromosomal abnormalities. Hydrocephalus is a condition in which there is an excessive accumulation of cerebrospinal fluid in the skull, leading to increased pressure within the brain. It can have various causes, including genetic factors, birth defects, infections, and head injuries.

If hydrocephalus is caused by a genetic disorder, it may be associated with chromosomal abnormalities. For example, some forms of hydrocephalus are associated with chromosomal conditions like trisomy 18 (Edwards syndrome) and trisomy 21 (Down syndrome). In these cases, the presence of extra chromosomes or chromosomal rearrangements can lead to developmental abnormalities, including hydrocephalus.

However, it's important to note that not all cases of hydrocephalus are associated with chromosomal abnormalities. Many cases are caused by other factors such as birth defects or acquired conditions. Therefore, it is crucial for individuals with hydrocephalus to undergo a thorough medical evaluation to determine the underlying cause and receive appropriate treatment.