two con- ditions (Momeni et al., 2010a). The association between schizophrenia and FTD has been rarely and only recently studied, however, despite Kraepelin's early observations. This may, at least in part, reflect the diagnostic criteria applied for schizophrenia and FTD, as well as the traditional do

ders, describing schizophrenia as a dementia that emerges in young adults (dementia praecox). Subsequent nosologies focused on other symptoms that Kraepelin consid- ered to be only secondary to the neurodegenerative process. These illness features include psychosis, which entails delusions and hallucina

ecox" ('dementia of early life'). Later in 1908 the term was recounted into "schizophrenia" by a swiss psychiatrist Eugen Bleuler. He disagreed with Kraepelin's concept of mental deterioration and preconsciousness and instead emphasized that splitting of psychic functioning is an essential feature of this