Horizon in Frontotemporal Lobar Degeneration Related Disorder

Book excerpt: Frontotemporal lobar degeneration (FTLD) encompasses a spectrum of focal neurodegenerative disorders with progressive atrophy of the frontal and temporal lobes. FTLD-related disorders are heterogeneous clinical conditions characterized by social dysfunction and personality changes as well as impairments in language, executive and motor functions. Current clinical diagnostic criteria characterize specific manifestations of FTLD, including transtemporal behavioral dementia (bvFTD), primary progressive aphasia with agrammatic variant (avPPA) and semantic variant (svPPA) subtypes, and movement disorders, including progressive supranuclear palsy (PSP), corticobasal syndrome (CBS), and FTD with amyotrophic lateral sclerosis (FTD-ALS).