In the third installment of our series on primary progressive aphasia (PPA), Dr. Rogan Magee discusses nonfluent/agrammatic PPA. Show citations: Grossman M, Seeley WW, Boxer AL, et al. Frontotemporal lobar degeneration. Nat Rev Dis Primers . 2023;9(1):40. Published 2023 Aug 10. doi: 10.1038/s41572-023-00447-0 Gorno-Tempini ML, Hillis AE, Weintraub S, et al. Classification of primary progressive aphasia and its variants. Neurology . 2011;76(11):1006-1014. doi: 10.1212/WNL.0b013e31821103e6 Santos-Santos MA, Rabinovici GD, Iaccarino L, et al. Rates of Amyloid Imaging Positivity in Patients With Primary Progressive Aphasia. JAMA Neurol . 2018;75(3):342-352. doi: 10.1001/jamaneurol.2017.4309 Mandelli ML, Lorca-Puls DL, Lukic S, et al. Network anatomy in logopenic variant of primary progressive aphasia. Hum Brain Mapp . 2023;44(11):4390-4406. doi: 10.1002/hbm.26388 Putcha D, Erkkinen M, Daffner KR. Functional Neurocircuitry of Cognition and Cognitive Syndromes. In: Silbersweig DA, Safar LT, Daffner KR. eds. Neuropsychiatry and behavioral neurology: principles and practice. McGraw Hill; 2021. Accessed November 6, 2025. https://neurology.mhmedical.com/content.aspx?bookid=3007§ionid=253215676 Montembeault M, Brambati SM, Gorno-Tempini ML, Migliaccio R. Clinical, Anatomical, and Pathological Features in the Three Variants of Primary Progressive Aphasia: A Review. Front Neurol . 2018;9:692. Published 2018 Aug 21. doi: 10.3389/fneur.2018.00692 Clark DG. Frontotemporal Dementia. Continuum (Minneap Minn) . 2024;30(6):1642-1672. doi: 10.1212/CON.0000000000001506
