Final answer:
Communicating hydrocephalus is the accumulation of cerebrospinal fluid (CSF) without obstruction in the ventricles of the brain. It occurs when there is an imbalance between CSF production and reabsorption, leading to fluid buildup and potential neurological symptoms.
Step-by-step explanation:
Communicating hydrocephalus is the accumulation of cerebrospinal fluid (CSF) without obstruction. Normally, CSF is produced in the ventricles of the brain and circulates to protect and nourish the central nervous system. However, in communicating hydrocephalus, there is an imbalance between CSF production and reabsorption, resulting in a buildup of fluid in the ventricles. This condition can cause swelling, pressure on the brain, and neurological symptoms if not treated properly.