Internal Radiation Therapy


Possible Complications

Internal RT does not cause your body to become radioactive. It can cause side effects. The RT harms healthy cells and cancer cells.

Here are some problems you may have:

  • Feeling very tired
  • Skin changes such as redness and irritation
  • Reduced white blood cell count
  • Hair loss
  • Nausea, vomiting, or diarrhea
  • Lack of hunger

Talk to your doctor about the problems you may have.

Other things that may raise the risk of problems are:

  • Prior RT or chemotherapy
  • If you have had lupus, scleroderma, or dermatomyositis

You should not be around radiation if you are pregnant or could be pregnant. It could harm the growing fetus.



This content is reviewed regularly and is updated when new and relevant evidence is made available. This information is neither intended nor implied to be a substitute for professional medical advice. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with questions regarding a medical condition.

Edits to original content made by Denver Health.