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Demência frontotemporal

Last reviewed: 11 Dec 2025
Last updated: 19 Sep 2025

Summary

Definition

History and exam

Key diagnostic factors

  • alteração da personalidade e dos hábitos, com embrutecimento do comportamento social
  • perda progressiva da fluência ou compreensão da linguagem
  • desenvolvimento do comprometimento de memória, desorientação ou apraxias
  • falta de cuidados pessoais progressiva e abandono de trabalho, atividades e contatos sociais
Full details

Other diagnostic factors

  • idade de início precoce
  • história familiar de demência frontotemporal (DFT)
  • hábitos alimentares alterados
  • desatenção, preocupações pueris, economia de esforço, resposta impulsiva e comportamentos compulsivos
  • sinais de esclerose lateral amiotrófica (ELA)
  • sintomas parkinsonianos
  • fasciculações, atrofia, hiper-reflexia e outros sinais de doença do neurônio motor
  • reflexos glabelares, orbicular da boca (snout), de sucção, de procura (rooting) ou de preensão
  • perda da controle vesical e intestinal
Full details

Risk factors

  • mutações do gene MAPT
  • mutações no gene GRN
  • mutações no gene C9orf72
  • outras mutações
  • lesão cerebral traumática
  • transtorno do estresse pós-traumático (TEPT)
Full details

Diagnostic tests

1st tests to order

  • testes cognitivos
  • ressonância nuclear magnética (RNM) cranioencefálica
  • tomografia computadorizada (TC) cerebral
  • Hemograma completo
  • proteína C-reativa sérica
  • hormônio estimulante da tireoide (TSH) sérico
  • tiroxina livre (T4)
  • perfil metabólico
  • ureia sérica
  • creatinina sérica
  • TFHs
  • níveis séricos de vitamina B12
  • níveis de folato sérico
  • sorologia para sífilis
  • teste de vírus da imunodeficiência humana (HIV)
  • ensaio de imunoadsorção enzimática (ELISA) sérico
Full details

Tests to consider

  • PET com fluordesoxiglucose (FDG)/CT cerebral
  • tomografia computadorizada por emissão de fóton único (SPECT) de perfusão cerebral
  • PET-CT de amiloide cranioencefálica
  • biópsia do cérebro
  • teste genético
  • perfil do tecido conjuntivo
  • velocidade de hemossedimentação sérica
  • eletroencefalograma (EEG)
  • eletromiografia (EMG)
Full details

Emerging tests

  • biomarcadores em fluidos

Treatment algorithm

ONGOING

todos os pacientes

Contributors

Authors

Raghava Kurup Radhakrishnan, DPM(NIMHANS), DNB(Psych), FRCPsych

Consultant Psycho-geriatrician

Waitemata District Health Board

Auckland

New Zealand

Disclosures

RKR serves as an advisory board member for the Australian and New Zealand Journal of Psychiatry.

Rommel Dawith, MBChB, FRANZCP, FFPOA

Psychiatrist of Old Age

Waitemata District Health Board

Auckland

New Zealand

Disclosures

RD declares that he has no competing interests.

Acknowledgements

Dr Raghava Kurup Radhakrishnan and Dr Rommel Dawith would like to gratefully acknowledge Dr Sachin Jauhari, Dr Lawrence Whalley, and Dr Chiadi Onyike, the previous contributors to this topic, and colleagues Dr Ann Boston (clinical psychologist), Dr Zara Godinovich (clinical psychologist), and Diane Ellis (clinical nurse specialist) for their suggestions.

Disclosures

SJ, LW, CO, AB, ZG, and DE declare that they have no competing interests.

Peer reviewers

Daniel Kaufer, MD

Director

Memory Disorders Program

Department of Neurology

University of North Carolina at Chapel Hill

NC

Disclosures

DK has received research support, speaking honoraria, and consulting fees from Eisai, Forest Laboratories, Johnson & Johnson, Medivation, Novartis, Ortho-McNeil, and Pfizer.

Bruce L. Miller, MD

Professor of Neurology

University of California

San Francisco

CA

Disclosures

BLM declares that he has no competing interests.

Philip Scheltens, MD, PhD

Professor of Neurology

Department of Neurology/Alzheimer Center

VU University Medical Center

Amsterdam

The Netherlands

Disclosures

PS declares that he has no competing interests.

Peer reviewer acknowledgements

BMJ Best Practice topics are updated on a rolling basis in line with developments in evidence and guidance. The peer reviewers listed here have reviewed the content at least once during the history of the topic.

Disclosures

Peer reviewer affiliations and disclosures pertain to the time of the review.

References

Our in-house evidence and editorial teams collaborate with international expert contributors and peer reviewers to ensure that we provide access to the most clinically relevant information possible.

Key articles

Rascovsky K, Hodges JR, Knopman D, et al. Sensitivity of revised diagnostic criteria for the behavioural variant of frontotemporal dementia. Brain. 2011 Sep;134(Pt 9):2456-77.Full text  Abstract

American College of Radiology. ACR appropriateness criteria: dementia. 2024 [internet publication].Full text

Buoli M, Serati M, Caldiroli A, et al. Pharmacological management of psychiatric symptoms in frontotemporal dementia: a systematic review. J Geriatr Psychiatry Neurol. 2017 May;30(3):162-9. Abstract

Reus VI, Fochtmann LJ, Eyler AE, et al. The American Psychiatric Association practice guideline on the use of antipsychotics to treat agitation or psychosis in patients with dementia. Am J Psychiatry. 2016 May 1;173(5):543-6.Full text  Abstract

Reference articles

A full list of sources referenced in this topic is available to users with access to all of BMJ Best Practice.
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