Frontotemporal dementia is characterized by the progressing degenerative process in frontal and temporal lobes. The symptoms often appear after 50 or 60 years, and sometimes even earlier. Frontotemporal dementia manifests itself in two main ways: frontal variant (that includes motor disorders and personality changes) and temporal variant (that includes language disorders).
Since frontal and temporal lobes are responsible for judgment and social behavior, people with frontotemporal dementia often have problems with socially acceptable behavior. They can be rude, obtrusive, impulsive and aggressive, disregard usual duties, repeat themselves and cross the line of what’s acceptable.
There are two main types of temporal dementia:
- Semantic dementia includes a gradual loss of words’ meaning, difficulty in finding the right words, remembering names and understanding language.
- Primary progressive aphasia is less common and affects the ability to talk with fluency.
Frontotemporal dementia (FTD) is sometimes called frontotemporal degeneration disease or Pick's disease.