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Deficiência de vitamina C

Last reviewed: 13 Jul 2025
Last updated: 08 Nov 2024

Summary

Definition

History and exam

Key diagnostic factors

  • deficiência de vitamina C após a revisão alimentar
  • sintomas constitucionais
  • facilidade para manifestar hematomas ou sangramento
  • comprometimento da marcha ou dor na perna
  • edema nos pés
  • hemorragias petequiais e perifoliculares (pernas e pés)
  • cicatrização deficiente de feridas
  • hematomas e equimoses nodulares ou negras em locais não traumáticos
  • edema na articulação
  • petéquias na mucosa oral
  • cabelos enrolados
  • hiperceratose folicular
  • perda de dentes
  • descoloração gengival
  • edema da gengiva
  • petéquias e hemorragias na pálpebra
  • proptose
  • hemorragia conjuntival e subconjuntival
Full details

Other diagnostic factors

  • disfagia
  • alopécia
  • síndrome semelhante à seca ou de Sjögren
  • baqueteamento digital ungueal
  • neuropatia periférica (encarceramento)
  • acidente vascular cerebral
  • insuficiência cardíaca
  • derrame pleural hemorrágico
  • osteoporose
Full details

Risk factors

  • populações de refugiados e afetadas pela fome
  • síndrome do desconforto respiratório agudo
  • idosos
  • morar sozinho
  • transtornos psiquiátricos
  • transtornos decorrentes do uso de bebidas alcoólicas
  • demência
  • baixa renda
  • dietas da moda
  • má dentição ou ineficiência mastigatória
  • transtorno do espectro autista
  • encefalopatias estáticas da infância
  • lactentes que tomam apenas leite de vaca
  • doença renal em estágio terminal, dependência de hemodiálise, e/ou pós-transplante renal
  • tabagismo
  • cirurgia
  • sepse
  • vírus da imunodeficiência humana (HIV)
  • doença crítica
  • pancreatite
  • doença inflamatória intestinal (DII)
  • doença do enxerto contra o hospedeiro (DECH)
Full details

Diagnostic tests

1st tests to order

  • hemograma completo e esfregaço de sangue periférico
  • ácido ascórbico sérico
  • ácido ascórbico leucocitário
  • ácido ascórbico no sangue total
  • radiografia do joelho e punho
Full details

Tests to consider

  • ressonância nuclear magnética (RNM) do joelho, punhos e ossos longos em casos pediátricos
  • biópsia da medula óssea
Full details

Treatment algorithm

INITIAL

alto risco ou população sintomática

Contributors

Authors

Caleb P. Kitcho, MD

Clinical Assistant Professor of Pediatrics

Senior Pediatric Critical Care Medicine Fellow (PGY-6)

University of Wisconsin School of Medicine and Public Health

Department of Pediatrics

Madison

WI

Disclosures

CK declares that he has no competing interests.

Awni Al-Subu, MD, FAAP

Associate Professor Pediatrics

University of Wisconsin School of Medicine and Public Health

Department of Pediatrics

Madison

WI

Disclosures

AAS has been paid consultancy fees with Edwards Lifesciences and PCCM board review. AAS is a course editor with American Physician Institute.

Acknowledgements

Dr Awni Al-Subu and Dr Caleb P. Kitcho would like to gratefully acknowledge Dr James M. Noble and Dr Marc C. Patterson, previous contributors to this topic.

Disclosures

JMN is an author of two articles cited in this topic. MCP is a member of the scientific advisory boards of the Ara Parseghian Medical Research Foundation, the National Niemann-Pick Disease Foundation, and the Metachromatic Leukodystrophy Foundation. MCP has been a consultant for Actelion, Amicus, IntraBio, Novartis, Orphazyme, Shire, and Vtesse. MCP has undertaken contractual research for Cerecor, Glycomine, Idorsia, and Shire. MCP has stock in IntraBio. MCP has received travel, accommodation or meeting expenses from Actelion, Amicus, Novartis, and Orphazyme.

Peer reviewers

Mark R. Corkins, MD

Professor of Pediatrics

University of Tennessee Health Science Center

Le Bonheur Children’s Hospital

Memphis

TN

Disclosures

MRC declares that he 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

Gonzalez-Campoy JM, St Jeor ST, Castorino K, et al. Clinical practice guidelines for healthy eating for the prevention and treatment of metabolic and endocrine diseases in adults: cosponsored by the American Association of Clinical Endocrinologists/the American College of Endocrinology and the Obesity Society. Endocr Pract. 2013 Sep-Oct;19 Suppl 3:1-82.Full text

National Institutes of Health. Vitamin C: fact sheet for health professionals. Mar 2021 [internet publication].Full text

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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