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Terje Sæhle and Per Kristian Eide

S hunt surgery is the primary treatment of pediatric and adult hydrocephalus, 42 although shunt failure requiring shunt revision is frequent. 2 , 8 , 12 , 45 Shunt failure may be accompanied by over- or underdrainage of CSF. When the shunt is draining too much CSF (overdrainage), symptoms such as headache and dizziness may arise. 9 , 37 However, symptoms such as headache and dizziness may also be caused by CSF underdrainage, e.g., due to obstruction of the CSF catheter. 10 The shunt valves with adjustable CSF opening pressure have been reported to

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Kristy Tan, Avital Meiri, Wenzhu B. Mowrey, Rick Abbott, James T. Goodrich, Adam L. Sandler, Asif K. Suri, Michael L. Lipton and Mark E. Wagshul

ventricles driven by increases in RD. 60 With this study, we have expanded on the existing literature by looking at DTI differences in relation to headache severity and QoL in chronic pediatric hydrocephalus, particularly important elements of the symptomatology in these patients—severe, debilitating headaches are one of the chief complaints that bring patients back into the clinic and cause them to worry about a potential shunt failure. 10 , 15 , 51 , 57 Headaches can be due to a variety of reasons, such as CSF overdrainage, or brief periods of ICP elevation, which can