<unk>  <unk>  is an umbrella term that refers to a group of progressive brain diseases, which are heterogeneous concerning neuropathology and etiology but share atrophy of the frontal and/or temporal cortex as a morphological feature. The clinical manifestations of the disorder depend on the primary site of atrophy and dominated by behavior alterations and language impairment.  The mean survival after diagnosis is from 3 to 10 years.
Frontotemporal lobar degeneration
Corticobasal degeneration
Multiple system atrophy
Dementia with Lewy bodies
Semantic dementia
Early-onset Alzheimer's disease
Metachromatic leukodystrophy
Multi-infarct dementia