Aphasia, progressive primary

Frontotemporal dementia (LTD) is one of the common forms of primary degenerative dementias after Alzheimer s disease and can affect presenile individuals. It is a clinically heterogeneous disorder characterized by alterations in language and/or behavior. Rarely it may be associated with Parkinsonism or amyotrophy. Depending on the initial and core clinical feature FID is further classified into primary progressive aphasia (PPA) when language impairment is the initial and core... 

Le Rhun E, Richard F, Pasquier F (2005) Natural history of primary progressive aphasia. Neurology 65 887-891. 

Primary progressive aphasia and other focal atrophies 10... 

PRIMARY PROGRESSIVE APHASIA AND OTHER FOCAL ATROPHIES... 

This is a new entity, sometimes diflUcult to differentiate from progressive primary aphasia or from probable Alzheimer-type dementia. It was individualised by Snowden et al. in 1989 [22]. Semantic dementia is a loss of performances which Tulving grouped under the term semantic memory [23]. The main clinical feature is the loss of the sense of words, things and persons. 

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