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CriticalNuclear Event

Radiation Exposure Treatment

Immediate steps to reduce harm if you have been exposed to radiation or radioactive contamination.

Updated 2026-01-15
3 min read
radiationdecontaminationnuclearhealthfallout

Preparation Steps

  • Understand the difference between irradiation (radiation passing through your body from an external source) and contamination (radioactive material on your skin, clothing, or inside your body) — contamination is the most manageable type and decontamination is highly effective.
  • If advised by local authorities, keep potassium iodide (KI) tablets at home and know the correct dosage for each age group.
  • Know the location of your nearest official decontamination center and emergency hospital with a radiation medicine unit.
  • Keep a sealed change of clothing and a supply of clean water available in a protected location.
  • Follow official guidance on whether to shelter in place or evacuate — do not self-evacuate unless told to do so.

Immediate Actions

  • Remove your outer clothing immediately — this single action eliminates up to 80% of external radioactive contamination; place clothing in a sealed plastic bag and move it away from people.
  • Shower thoroughly with soap and lukewarm water — do not scrub your skin; pat gently to avoid breaking skin and creating an entry point for particles.
  • Blow your nose gently and wipe your eyelids and ears with a clean, damp cloth.
  • Contact emergency services and follow their specific instructions for your situation.
  • Take KI tablets only if directed by authorities and only at the recommended dose — KI protects the thyroid gland only; it does not protect against other radiation effects.

What to Avoid

  • Do not touch your face, mouth, or eyes before completing decontamination — this prevents ingesting radioactive particles.
  • Do not eat, drink, or smoke anything that may have been exposed to contamination.
  • Do not use hair conditioner — it can bind radioactive particles to hair, making decontamination harder.
  • Do not assume you are safe simply because you feel fine — radiation sickness symptoms can be delayed by hours or days.
  • Do not donate blood or undergo elective procedures until cleared by medical professionals.

Supplies Needed

  • KI (potassium iodide) tablets, stored according to manufacturer and local authority guidance.
  • A sealed change of clothing kept in a protected indoor location.
  • Soap and a supply of clean, sealed water for decontamination showers.
  • Sealed plastic bags for containing contaminated clothing and materials.

Recovery Steps

  • Seek a full medical evaluation as soon as possible and provide staff with the time, duration, location, and estimated level of your exposure.
  • Do not donate blood until a medical professional has cleared you to do so.
  • Follow the medical monitoring schedule prescribed — blood counts and thyroid function may need periodic testing.
  • Document all symptoms, their onset time, and any treatments received for your medical record.
  • Contact your country's nuclear regulatory authority or public health agency for ongoing guidance and monitoring resources.