ArticleFrontotemporal Dementia Classification and NeuropsychiatryChow, Tiffany W. MD; Miller, Bruce L. MD; Boone, Kyle PhD; Mishkin, Fred MD; Cummings, Jeffrey L. MDAuthor Information From the Rancho Los Amigos/USC Alzheimer’s Disease Center; Department of Neurology, USC Keck School of Medicine, Downey, California (T.W.C.), USA; Department of Neurology, UC San Francisco School of Medicine, San Francisco, California (B.L.M.), USA; Department of Psychiatry, Harbor-UCLA Medical Center (K.B.) and Department of Radiology, Harbor-UCLA Medical Center, Torrance, California (F.M.), USA; Departments of Neurology and Psychiatry and Biobehavioral Sciences, UC Los Angeles School of Medicine, Los Angeles, California (J.L.C.), USA. Send reprint requests to Tiffany W. Chow, MD, Rancho Los Amigos/USC Alzheimer’s Disease Center, 7601 E. Imperial Highway, Downey, CA 90242. E-mail: [email protected] The Neurologist: July 2002 - Volume 8 - Issue 4 - p 263-269 Buy Abstract BACKGROUND– Frontotemporal dementia (FTD) is a syndrome encompassing the clinical expression of frontal or temporal lobe degeneration. The many clinical phenotypes of FTD include primary progressive aphasias and a more common frontotemporal degeneration with less marked language alteration but significant behavioral changes. SUMMARY– This paper describes the clinical progression of neuropsychiatric symptoms among 62 predominantly behavioral presentations and 30 language presentations of FTD. Disinhibition and depression became common for both subject groups over the course of illness. Significantly more cases presenting with behavioral changes had apathy and disinhibition. CONCLUSIONS– Language presentations of FTD had longer latency to onset of distinct neuropsychiatric changes but eventually converge with the phenotype initially affected with behavioral change. Clinicians should anticipate such neuropsychiatric changes, prepare families for the course of illness in patients with either clinical presentation, and treat symptomatically with psychotropic medications to help families cope with behaviorally disturbed patients. © 2002 Lippincott Williams & Wilkins, Inc.