Thelansis

 Primary Progressive Aphasia (PPA) is a neurodegenerative disorder primarily affecting language abilities. It is classified into three variants based on clinical characteristics, including logopenic variant PPA (lvPPA), nonfluent agrammatic PPA (nfaPPA), and semantic variant PPA (svPPA). The symptoms of PPA can vary and may include difficulty with speech, word finding, comprehension of language, and naming objects and people. PPA is a result of neurodegeneration, which refers to the progressive death of brain cells that cannot be attributed to other causes, such as head trauma, stroke, infection, or cancer. The three most commonly encountered underlying diseases causing PPA are frontotemporal lobar degeneration with abnormal TDP-43 accumulation (FTLD-TDP-43), frontotemporal lobar degeneration with abnormal tau protein accumulation (FTLD-tau), and Alzheimer's disease (AD). When abnormal proteins associated with Alzheimer's disease or one of the forms of frontotemporal lobar dege...