Cognitive and Behavioral Symptoms in ALSFTD: Detection, Differentiation, and Progression

J Geriatr Psychiatry Neurol. 2016 Jan;29(1):3-10. doi: 10.1177/0891988715598232. Epub 2015 Aug 6.

Abstract

Brief screening tools that detect and differentiate patients with amyotrophic lateral sclerosis and frontotemporal dementia (ALSFTD) from those more subtle cognitive or behavioral symptoms (ALS plus) and motor symptoms only (ALS pure) is pertinent in a clinical setting. The utility of 2 validated and data-driven tests (Mini-Addenbrooke's Cognitive Examination [M-ACE] and Motor Neuron Disease Behavioral Scale [MiND-B]) was investigated in 70 ALS patients (24 ALSFTD, 19 ALS plus, and 27 ALS pure). More than 90% of patients with ALSFTD scored at or below the cutoff on the M-ACE, whereas this was seen in only about 20% of ALS patients without dementia. The MiND-B differentiated between ALS pure and ALS plus diagnostic categories. Rasch modeling of M-ACE and MiND-B items revealed early cognitive (fluency, memory recall) and behavioral (apathy) symptoms in ALSFTD. The combined use of the M-ACE and MiND-B detects patients with ALSFTD, differentiates along the ALS continuum, and offers insight into the progression of nonmotor symptomatology in ALSFTD.

Keywords: amyotrophic lateral sclerosis; behavioral disturbance; cognitive screening; frontotemporal dementia.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Amyotrophic Lateral Sclerosis / complications*
  • Amyotrophic Lateral Sclerosis / psychology
  • Behavior / physiology
  • Behavioral Symptoms / diagnosis*
  • Behavioral Symptoms / psychology
  • Cognition / physiology
  • Cognition Disorders / diagnosis*
  • Cognition Disorders / etiology
  • Disease Progression
  • Female
  • Frontotemporal Dementia / complications*
  • Frontotemporal Dementia / psychology
  • Humans
  • Male
  • Middle Aged
  • Neuropsychological Tests
  • Psychometrics / instrumentation*
  • Surveys and Questionnaires / standards*

Supplementary concepts

  • Frontotemporal Dementia With Motor Neuron Disease