ed properly into the bloodstream.??????????????? Normal PressureThis form occurs in old age as a result of a gradual blockage and build up of CSF.Hydrocephalus is also classified as:??????????????? CongenitalHydrocephalus is present before birth.AcquiredHydrocephalus develops after birth, usually as a result of trauma to the brain such as infection, head injury, meningitis or tumors.What are the s