What causes normal pressure hydrocephalus (NPH)?

Updated: Oct 19, 2018
  • Author: Michael J Schneck, MD, MBA; Chief Editor: Selim R Benbadis, MD  more...
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Normal pressure hydrocephalus may occur due to a variety of secondary causes but may be idiopathic in approximately 50% of patients. Secondary causes of NPH include head injury, subarachnoid hemorrhage, meningitis, and CNS tumor. Another potential cause could be previously compensated congenital hydrocephalus. [10]

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