Recurrent transient global amnesia related to dural arteriovenous fistula.

Abstract

Transient global amnesia (TGA) is a syndrome characterized by the sudden onset of anterograde amnesia, typically lasting for a few to less than 24 h. This condition is considered benign, as it is usually self-limited and unrelated to brain lesions; however, TGA may less frequently occur due to vascular brain changes. We report a rare case of a 66-year-old male with a diagnosis of recurrent TGA associated with a brain dural arteriovenous fistula (DAVF), alongside the absence of clear triggering and risk factors. He was submitted to embolization and remained event-free until his last attempt, 18 months after the surgical procedure. The case presentation follows a brief literature review on TGA and the pathophysiological mechanisms probably underpinning its occasional correlation with brain DAVF.