Finally, hydrocephalus can appears owing to
diseases (such as meningitis, tumors), after
bleeding, after head injury (National Institute ofNeurological Disorders and Stroke, 2010),
hydrocephalus ex-vacuo and idiopathic, when the
cause of it, is unknown (National Institute of
Neurological Disorders and Stroke, 2010;
National Hydrocephalus Foundation, 2010).