FTD

Frontotemporal dementia (FTD) is a group of related conditions resulting from the progressive degeneration of the temporal and frontal lobes of the brain. These areas of the brain play a significant role in decision-making, behavioral control, emotion and language.

 And those are some examples:

- socially inappropriate behaviors 
- loss of mental flexibility 
- decline in personal hygiene
- language problems, and movement disorders
- difficulty with concentration and thinking.