Causes of Hydrocephalus

The conditions causing hydrocephalus include the following:

• Excessive CSF production by the choroid plexuses
o Choroid plexus papilloma

• Blockage in the CSF circulation, either within the ventricle, or on the outside of them
o Aqueductal stenosis
o Tumours
o Chiari malformation especially types I and II
o Dandy-Walker malformation
o Intraventricular haemorrhage
o Meningitis
o Spinal tumour
o Myelomeningocoele

• Impairment of CSF absorption by the arachnoid villi.
o Meningitis
o Subarachnoid haemorrhage

The causes enumerated above could also be classified into congenital or acquired.