Ischemic Amnesia Caused by Bilateral Fornix Infarction: A Rare Entity

Annals of Indian Academy of Neurology ¦ Volume 22 ¦ Issue 3 ¦ July-September 2019 333 to low-CSF pressure. Previous reports have suggested that the mechanism of frontal lobe dysfunction due to low-CSF pressure could be explained by brain sagging and anatomic distortion.[4,5] In this case, we did not find any clue of intracranial hypotension on the patient’s brain MRI, such as pachymeningeal thickening and sagging brainstem. However, considering the symptom onset, the course of recovery, and the result of the neuropsychological test, we assume that her symptom of psychomotor slowing suggesting frontal lobe dysfunction was closely related to the choroid plexus infarction. Further studies with more cases are needed to understand its underlying mechanism. Declaration of patient consent The authors certify that they have obtained all appropriate patient consent forms. In the form the patient(s) has/have given his/her/their consent for his/her/their images and other clinical information to be reported in the journal. The patients understand that their names and initials will not be published and due efforts will be made to conceal their identity, but anonymity cannot be guaranteed.