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Hipotireoidismo primário

Última revisão: 22 Jul 2025
Última atualização: 25 Apr 2025

Resumo

Definição

História e exame físico

Principais fatores diagnósticos

  • presença de fatores de risco
  • sintomas inespecíficos
Detalhes completos

Outros fatores diagnósticos

  • letargia
  • constipação
  • ganho de peso
  • depressão
  • irregularidade menstrual
  • pele seca ou áspera
  • mudança na voz
  • bradicardia
  • hipertensão
  • retardo do relaxamento dos reflexos tendinosos
  • sensibilidade ao frio
  • cabelo grosso
  • edema palpebral
  • bócio
Detalhes completos

Fatores de risco

  • deficiência de iodo
  • sexo feminino
  • meia-idade
  • história familiar de tireoidite autoimune
  • doenças autoimunes
  • tratamento para doença tireoidiana
  • tireoidite pós-parto
  • Síndromes de Turner e de Down
  • diabetes do tipo 1
  • radioterapia de cabeça e pescoço
  • doença infiltrante
  • excesso de iodo
  • exposição a pesticidas
  • uso da amiodarona
  • uso de lítio
  • laringectomia
  • tratamento para tuberculose (TB) resistente a múltiplos medicamentos
Detalhes completos

Investigações diagnósticas

Primeiras investigações a serem solicitadas

  • hormônio estimulante da tireoide (TSH) sérico
Detalhes completos

Investigações a serem consideradas

  • tiroxina livre sérica (T4)
  • anticorpos antitireoperoxidase (anti-TPOAbs)
  • Hemograma completo
  • glicemia de jejum
  • colesterol sérico
Detalhes completos

Algoritmo de tratamento

CONTÍNUA

hipotireoidismo primário evidente confirmado

hipotireoidismo subclínico

Colaboradores

Autores

Wail Malaty, MD

Adjunct Clinical Professor

Department of Family Medicine

University of North Carolina

Chapel Hill

NC

Disclosures

WM declares that he has no competing interests.

Peer reviewers

Sun Y. Lee, MD, MSc

Assistant Professor of Medicine

Boston University School of Medicine

Boston

MA

Disclosures

SYL declares that she has no competing interests.

Salman Razvi, MD, FRCP

Consultant Endocrinologist

Queen Elizabeth Hospital

Gateshead

UK

Disclosures

SR declares that he has no competing interests.

Lakdasa Premawardhana, MBBS, FRCP, FRCPE

Consultant Physician

Caerphilly Miners' Hospital

Caerphilly

UK

Disclosures

LP declares that he has no competing interests.

Birte Nygaard, MD, PhD

Associated Professor

Consultant Endocrinologist

Herlev Hospital

University of Copenhagen

Denmark

Disclosures

BN declares that she has no competing interests.

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

Taylor PN, Medici MM, Hubalewska-Dydejczyk A, et al. Hypothyroidism. Lancet. 2024 Oct 5;404(10460):1347-64. Abstract

Alexander EK, Pearce EN, Brent GA, et al. 2017 guidelines of the American Thyroid Association for the diagnosis and management of thyroid disease during pregnancy and the postpartum. Thyroid. 2017 Mar;27(3):315-89.Full text  Abstract

American Association of Clinical Endocrinologists; American Thyroid Association. Clinical practice guidelines for hypothyroidism in adults: cosponsored by the American Association of Clinical Endocrinologists and the American Thyroid Association. Endocr Pract. 2012 Nov-Dec;18(6):988-1028.Full text  Abstract

Jonklaas J, Bianco AC, Bauer AJ, et al. Guidelines for the treatment of hypothyroidism: prepared by the American Thyroid Association Task Force on Thyroid Hormone Replacement. Thyroid. 2014 Dec;24(12):1670-751.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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  • Patient information

    Hipotireoidismo: perguntas a fazer ao seu médico

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