Editing Aphasiology (section)

==Primary progressive aphasias==
{{Main article|Primary progressive aphasia}}
'''Primary progressive aphasia''' is a rare disorder where people slowly lose their ability to talk, read, write, and comprehend what they hear in conversation over a period of time. It was first described as a distinct syndrome by Mesulam in 1982.<ref>{{cite journal |author=Mesulam M |title=Slowly progressive aphasia without generalized dementia |journal=Ann. Neurol. |volume=11 |issue=6 |pages=592–8 |year=1982 |pmid=7114808 |doi=10.1002/ana.410110607|s2cid=29107525 }}</ref> There are three variants:  [[progressive nonfluent aphasia|progressive nonfluent aphasia (PNFA)]],<ref name="Mesulam, 2001">{{cite journal |author=Mesulam MM |title=Primary progressive aphasia |journal=Ann. Neurol. |volume=49 |issue=4 |pages=425–32 |date=April 2001 |pmid=11310619 |doi=10.1002/ana.91 |s2cid=35528862 }}</ref> [[semantic dementia|semantic dementia (SD)]],<ref name="Mesulam, 2001"/><ref name="Adlam 2006">{{cite journal |vauthors=Adlam AL, Patterson K, Rogers TT |title=Semantic dementia and fluent primary progressive aphasia: two sides of the same coin? |journal=Brain |volume=129 |issue=Pt 11 |pages=3066–80 |date=Nov 2006 |pmid=17071925 |doi=10.1093/brain/awl285 |display-authors=etal|doi-access=free }}</ref> and [[logopenic progressive aphasia|logopenic progressive aphasia (LPA)]].<ref>{{cite journal |vauthors=Gorno-Tempini ML, Dronkers NF, Rankin KP |title=Cognition and anatomy in three variants of primary progressive aphasia |journal=Ann. Neurol. |volume=55 |issue=3 |pages=335–46 |date=Mar 2004 |pmid=14991811 |pmc=2362399 |doi=10.1002/ana.10825 |display-authors=etal}}</ref>