The side effects of radiation therapy depend mainly on the treatment dose and the part of the body that is treated. Common side effects of radiation include dry, reddened skin and hair loss in the treated area, loss of appetite, and extreme tiredness. Some women may have dryness, itching, tightening, and burning in the vagina. Radiation also may cause diarrhea or frequent and uncomfortable urination. It may reduce the number of white blood cells, which help protect the body against infection.

Doctors may advise their patients not to have intercourse during radiation therapy. However, most can resume sexual activity within a few weeks after treatment ends. The doctor or nurse may suggest ways to relieve any vaginal discomfort related to treatment.

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