What are the symptoms of cyanide toxicity?

Updated: May 30, 2020
  • Author: Inna Leybell, MD; Chief Editor: Michael A Miller, MD  more...
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Symptoms may include the following:

  • General weakness, malaise, and collapse

  • Neurologic symptoms (reflecting progressive hypoxia) - Headache, vertigo, dizziness, giddiness, inebriation, confusion, generalized seizures, coma

  • Gastrointestinal symptoms - Abdominal pain, nausea, vomiting

  • Cardiopulmonary symptoms - Shortness of breath, possibly associated with chest pain, apnea

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