dieter schrÖder is having tests done in the hospital.geon alexander kÖnig asks him if he has the main symptoms of the condition: these are gait disturbance; forgetfulness, inattention, and incontinence. dieter schrÖder confirms that he suffers from all these problems. >> with patients suffering from normal pressure hydrocephalus, the pressure of the cerebrospinal fluid doesn't remain constant for 24 hours a day. if the condition is untreated for months or years it can cause secondary damage to the brain. >> an mri can help rule out other conditions. the dark patches show that neural water has collected in the brain's chambers, the ventricles. this can cause forgetfulness, which is the next thing the dotor tests with his patient. the doctor also checks dieter schrÖder's gait. >> he is taking steps that are about half as long as his foot. this is fairly typical and a lumbar puncture provides the most conclusive evidence of nph. this involves taking a sample of neural fluid from the canal of the spinal cord. >> a lumbar puncture entails col