Treatment-Resistant Late-Life Depression: A Review of Clinical Features, Neuropsychology, Neurobiology, and Treatment

Psychiatr Clin North Am. 2023 Jun;46(2):371-389. doi: 10.1016/j.psc.2023.02.008. Epub 2023 Mar 27.

Abstract

Major depression is common in older adults (≥ 60 years of age), termed late-life depression (LLD). Up to 30% of these patients will have treatment-resistant late-life depression (TRLLD), defined as depression that persists despite two adequate antidepressant trials. TRLLD is challenging for clinicians, given several etiological factors (eg, neurocognitive conditions, medical comorbidities, anxiety, and sleep disruption). Proper assessment and management is critical, as individuals with TRLLD often present in medical settings and suffer from cognitive decline and other marks of accelerated aging. This article serves as an evidence-based guide for medical practitioners who encounter TRLLD in their practice.

Keywords: Diagnosis; Neuromodulation; Neuropsychological factors; Older adults; Presentation; Treatment; Treatment-resistant depression.

Publication types

  • Case Reports
  • Review

MeSH terms

  • Aged
  • Alzheimer Disease / complications
  • Anxiety / complications
  • Depressive Disorder, Treatment-Resistant* / complications
  • Depressive Disorder, Treatment-Resistant* / diagnosis
  • Depressive Disorder, Treatment-Resistant* / psychology
  • Depressive Disorder, Treatment-Resistant* / therapy
  • Diagnosis, Differential
  • Electroconvulsive Therapy
  • Female
  • Humans
  • Inflammation / complications
  • Ketamine
  • Neuropsychology
  • Sleep Initiation and Maintenance Disorders / complications
  • Transcranial Magnetic Stimulation
  • Vagus Nerve Stimulation

Substances

  • Esketamine
  • Ketamine