My son Joshua is 35 years old. He has hydrocephalus. He has a shunt that has been checked out at University hospital with no presure problems. Joshua has developed a problem with his pulse dropping to 40 beats per minuite and his blood preasure getting as high as 160 over 110. We took him to a Dr of Neurology and she put him on blood preasure medicine and Topiramate. After a week on blood preasure med he started to pass out. I took him off, and to hospital. MRI,CT,EEG,EKG,and ultrsound of heart look good. We left with no answers and my son still has terrible headaches. 5-6 a day... any suggestions...Jack Slaasted