Hydrocephaly, also known as hydrocephalus, is a condition that occurs due to the accumulation of cerebrospinal fluid in the brain. Some possible synonyms for this condition may include water on the brain, fluid buildup in the skull, or cranial swelling. Additionally, some medical terms that may be used to describe hydrocephaly include hydrocephalism, hydrocephalitis, and hydrocephalopathy. Other less commonly used descriptive phrases may include brain ventricular enlargement, obstructive hydrocephalus, or communicating hydrocephalus. While hydrocephaly can manifest in different ways in different individuals, it is important to note that it is a serious condition that requires prompt medical attention.