"Frontotemporal dementia (FTD) is a group of primary neurodegenerative disorders primarily affecting the frontal and temporal lobes. Onset is typically insidious with a gradual and worsening course. Several syndromic variants (some with an identified genetic basis or familiarity) are described that include presentations with predominantly marked personality and behavioural changes (such as executive dysfunction, apathy, deterioration of social cognition, repetitive behaviours, and dietary changes) or with predominantly language deficits (that include semantic, agrammatic/nonfluent, and logopenic forms), or with a combination of these deficits. Memory function, psychomotor speed, as well as visuoperceptual and visuospatial abilities often remain relatively intact, particularly during the early stages of the disorder." From ICD11 version 09/2020

http://www.semanticweb.org/zhenyuzhang/ontologies/2020/DRPSNPTO/FrontotemporalDementia

http://www.semanticweb.org/zhenyuzhang/ontologies/2020/DRPSNPTO/Dementia