Hydrocephalous is excessive water inside the brain or obstruction to the normal flow of Cerebrospinal fluid (CSF) in brain. It usually affects infants and older adults. The excessive amount of fluid put pressure on brain and can cause brain damage. Increase in CSF might lead to headache, vomiting and blurring of vision. In infants, it can occur due to birth defects or be acquired later in life. The other causes include meningitis, brain tumors, traumatic brain injury and hemorrhage. Hydrocephalous is treated by inserting Ventriculo-Peritneal shunt to bypass CSF into the abdomen or by Endoscopic third ventriculostomy, both procedures have pros/cons.