Final answer:
Hydrocephalus is the condition of abnormal accumulation of cerebrospinal fluid causing enlargement of the skull and compression of the brain.
Step-by-step explanation:
The condition that causes abnormal accumulation of cerebrospinal fluid, leading to enlargement of the skull and compression of the brain, is called hydrocephalus.
Hydrocephalus occurs when the ventricles in the brain are blocked, causing CSF to build up and exert pressure on the brain, pushing it against the skull. This can result in seizures, cognitive problems, and even death if not treated.
A shunt is commonly inserted to remove the excess fluid and relieve the pressure in cases of hydrocephalus.