"Split-day syndrome", a patient with frontotemporal dementia who lives two days in the span of one: a case report and review of articles.

Frontotemporal dementia (FTD) is among the most prevalent causes of young-onset dementia  . Along with the frontotemporal and striate atrophy, dopamine dysregulation is also present in FTD. The dopamine system controls mechanisms of time perception. Its depletion can cause miscalculations in the perception of time. We present a 72-year-old man with a unique profile of disorientation in time, such that he split each day into two, 12-h intervals. Although through each 12-h period, he went by his daily activities as if a complete day had passed, e.g., he had two sets of breakfast, lunch, and dinner  , hence the designated "split-day syndrome."

Sour aversion in frontotemporal dementia: a case report and review on physiologic-anatomic mechanisms.

Frontotemporal dementia (FTD) is a common cause of early-onset dementia characterized by behavioral and personality changes, as well as, altered eating habits. FTD is associated with complex changes in neural networks of gustatory processing which may be responsible for eating abnormalities. Here, we present a 66-years-old lady suffered from behavioral variant of FTD with an interesting symptom of food aversion, typically sour foods.