Intermittent Hydrocephalus

[Susan__0__0]

  Would you please explain the symptoms of intermittent hydrocephalus?  I posted a few months ago about an incidental finding of multiple cysts in the ventricles of my brain on a brain MRI done as part of testing for MS.  To be honest, it looks like the ventricles are filled with cysts on the MRI film.  I was told that the ventricles themselves are not enlarged.
  Anyway, no one seems to know what they are.  My neurologist says that it is nothing to worry about, but it is something we need to watch, but he never set up another visit.  The CCF MD said to watch for intermittent hydrocephalus, but I don't know the symptoms.  Thanks for your help.
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Intermittent hydrocephalus is a rare phenomenon which results when a cyst
within the ventricle of the brain intermittently becomes wedged into one
of the drainage channels which drain cerebrospinal fluid from the ventricles
down through the brainstem. This causes a relatively acute increase in the pressure of  cerebrospinal fluid which manifests either as headache or loss of conciousness which may be related to changes in posture.