Shunt overdrainage after mild head trauma

Here, we present a case of shunt overdrainage causing bilateral subdural hematoma, which developed after mild head trauma in a patient who had a history of V-P shunt surgery 6 years previously for normal-pressure hydrocephalus.2 Case report A 65-year-old woman, with a history of V-P shunt placement 6 years ago for the treatment of normal-pressure hydrocephalus was admitted to our emergency room because of mild head trauma after a traffic accident. After a mild head trauma, the intracranial pressure dynamics may change, resulting in shunt overdrainage; this may lead to the rupture of bridging veins and SDH.