Throat problems, such as trouble swallowing.Treatment areas and possible side effects Part of the body being treated Ask them about the side effects that you might expect. Discuss this chart with your doctor or nurse. Many of the side effects in the list link to more information in the Side Effects section. To see which side effects you might expect, find the part of your body being treated in the following chart. Other radiation therapy side effects you may have depend on the part of the body that is treated. See Fatigue and Cancer Treatment to learn more. People feel fatigue in different ways and you may feel more or less fatigue than someone else who is getting the same amount of radiation therapy to the same part of the body.

It can happen all at once or come on slowly. Fatigue is feeling exhausted and worn out. Many people who get radiation therapy have fatigue. Damage to healthy cells can cause side effects. Radiation not only kills or slows the growth of cancer cells, it can also affect nearby healthy cells.

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