[Answer] What causes communicating (nonobstructive) hydrocephalus?

Answer: results from impaired reabsorption of CSF in the absence of obstruction between the ventricles and subarchnoid space.

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What causes communicating (nonobstructive) hydrocephalus? A condition characterized by excess fluid build-up in fluid-containing cavities of the brain. Cerebrospinal fluid is a clear colorless body fluid found in the brain and spinal cord. It is produced by the specialised ependymal cells in the choroid plexuses of the ventricles of the brain and absorbed in the arachnoid granulations. There is about 125mL of CSF at any one time and about 500 mL is generate… Communicating Hydrocephalus - Nervous System Diseases Communicating Hydrocephalus - Nervous System Diseases Obstructive Hydrocephalus - Nervous System Diseases Hydrocephalus | Johns Hopkins Medicine One of the most common causes is aqueductal stenosis a narrowing of the aqueduct of Sylvius a small passage between the third and fourth ventricles in the middle of the brain. Normal pressure hydrocephalus (NPH)is a form of communicating hydrocephalus that can strike people at any age ...

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