Hydrocephalus, often referred to as “water on the brain,” is a medical condition in which there is an abnormal accumulation of cerebrospinal fluid (CSF) within the ventricles (fluid-filled spaces) of the brain. Hydrocephalus is a condition characterized by an abnormal buildup of cerebrospinal fluid (CSF) in the brain’s ventricles. This excess fluid puts pressure on the brain, which can cause serious neurological problems if left untreated. In this article, we’ll explore the causes, symptoms, diagnosis, and treatment of hydrocephalus.