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radiation sickness

radiation sickness (also called acute radiation syndrome) happens when a person is exposed to large amounts of radiation all at once.

exposure to small amounts of radiation—like from an x-ray or ct scan—doesn't cause any symptoms. but exposure to large amounts of radiation all at once—like from a nuclear explosion—may cause radiation sickness and death.

symptoms of radiation sickness may include:

  • nausea, vomiting, and diarrhea.
  • fever.
  • fatigue.
  • feeling weak, faint, or dizzy.
  • hair loss.
  • skin redness, itching, swelling, or burns.
  • pain.
  • seizures.

people who have been exposed to large amounts of radiation and have these symptoms need to see a doctor right away.

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this information does not replace the advice of a doctor. healthwise, incorporated, disclaims any warranty or liability for your use of this information. your use of this information means that you agree to the terms of use and privacy policy. to learn more about healthwise, visit healthwise.org. © 1995-2022 healthwise, incorporated. healthwise, healthwise for every health decision, and the healthwise logo are trademarks of healthwise, incorporated.

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