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Symptomsback to top. The following symptoms are considered hallmarks of normal pressure hydrocephalus: Difficulty walking that's sometimes compared to the way a person walks on a boat, with the body bent forward, legs held wide apart and feet moving as if they're glued to the deck..
Hydrocephalus (water on the brain) is an excess of cerebrospinal fluid around the brain. Typically, the ventricles (cavities in the center of the brain) that secrete this fluid are greatly enlarged. Spinal fluid circulates around the spinal cord and is absorbed by veins on the external surface of the brain. Congenital hydrocephalus is usually diagnosed shortly after birth, but normal-pressure hydrocephalus occurs in a small number of elderly people. This condition can result from head trauma, brain hemorrhage, or meningitis (inflammation of the membrane covering the brain), but most cases occur spontaneously without an obvious preceding illness.