A Case of Sudden Onset of Hypersomnolence

We report a case of a 59-year-old woman who presented with a sudden onset of severe hypersomnolence. Imaging confirmed acute bithalamic infarcts. Bithalamic strokes pose diagnostic challenges, especially during the emergent and acute phase, owing to their unique clinical presentation as patients may lack focal deficit, potentially leading to a delay in diagnosis and treatment. We outline the acute and chronic clinical course and discuss the emerging neuropsychiatric sequelae.