Chronicling the diagnostic journey, symptom experiences, and disease impact in frontotemporal degeneration

Abstract

Background: Frontotemporal degeneration (FTD) is an umbrella term encompassing a range of rare neurodegenerative disorders that cause progressive decline or changes in cognition, language, behavior, and personality. The FTD Insights Survey was created with the aim of gathering information on the lived experience of FTD. Here we present a subset of survey data chronicling the diagnostic journey, symptoms experienced, and the impact of FTD on distress, quality of life, and independence, in the mild to moderate stages of the disease course. Method: In total, 1,796 individuals completed the survey. Persons reported as severe to profoundly impaired due to FTD, as well as past caregivers, were excluded for this analysis. The resulting cohort included 219 individuals diagnosed with FTD and 437 current care partners, representing a range of FTD diagnoses (n = 395 behavioral variant frontotemporal dementia or Pick's disease; n = 155 primary progressive aphasia; n = 61 progressive supranuclear palsy or corticobasal syndrome; n = 13 FTD with amyotrophic lateral sclerosis; n = 32 unknown).Result: Around half of survey respondents saw three or more doctors before an FTD diagnosis was given, and a range of prior diagnoses, including primary psychiatric disorders, Parkinson's disease, or Alzheimer's disease, were noted. Most frequently endorsed symptoms tended to be consistent with clinical characteristics of the specific diagnosis, though there was significant variability in symptoms reported within diagnostic categories as well as considerable overlap in symptoms between diagnostic categories. Cognitive and language symptoms of FTD were generally most distressing to the person diagnosed, and a loss of independence was highly endorsed as affecting quality of life. The distinct perspectives of diagnosed persons and care partners regarding disease impact differed notably for bvFTD/Pick's disease. Participating independently in activities, within the home, outside the home, and with other people, were reported as challenging for people living with FTD, underscoring the significant disruption to daily living even at the mild and moderate stages of disease.