Cervical Cancer Series 13: Managing Side Effects During Radiation Therapy
When you begin radiation therapy for cervical cancer, you may be just as concerned about side effects as you are about the treatment itself.
“Will the treatment be difficult to tolerate?”
“Could I have ongoing diarrhea or discomfort when urinating?”
“Will all the side effects disappear once treatment is over?”
Radiation therapy does not affect everyone in the same way. The type and severity of side effects can vary depending on the area being treated, the radiation dose, the type of treatment, whether chemotherapy is given at the same time, and your overall health.
Because radiation therapy for cervical cancer usually targets the pelvic area, nearby healthy tissues and organs—including the bowel, bladder, skin, and vagina—may also be affected. Fatigue is another common problem during treatment.
However, having side effects does not mean you simply have to endure them.
Knowing what changes may occur, managing symptoms appropriately, and telling your treatment team when necessary can help you manage radiation therapy as safely and comfortably as possible.
How Is Radiation Therapy for Cervical Cancer Given?
Radiation treatment for cervical cancer generally involves two main approaches: external beam radiation therapy (EBRT) and brachytherapy.
External beam radiation therapy delivers radiation from a machine outside the body to the tumor and surrounding areas. Brachytherapy places a radiation source in or near the tumor, allowing a high dose of radiation to be delivered directly to the treatment area.
Depending on the stage of cervical cancer and the individual treatment plan, radiation may also be given together with chemotherapy. This is known as concurrent chemoradiation.
Radiation damages the DNA of cancer cells, preventing them from growing and dividing. However, nearby healthy tissues can also be affected. With pelvic external beam radiation therapy, this may lead to changes involving the bowel, bladder, skin, and vagina.
After brachytherapy, some people may temporarily experience vaginal soreness or irritation, discharge, or light bleeding. If these symptoms are severe or continue longer than expected, they should be discussed with the treatment team.
Understanding which type of radiation therapy you are receiving is an important first step in knowing which side effects to watch for and how to manage them.
Your Bowel and Bladder May Become More Sensitive
The bowel and bladder are located close to the cervix within the pelvis.
As a result, pelvic radiation can irritate the bowel and cause diarrhea, loose stools, abdominal discomfort, or cramping. Some people may also experience nausea or vomiting.
If bowel symptoms begin, it can be helpful to pay attention to how often you are having bowel movements and how they differ from your usual pattern. Persistent diarrhea can lead to fluid loss, reduced food intake, and worsening fatigue.
Staying adequately hydrated is often important, although the appropriate amount may vary depending on your overall health. Rather than severely restricting your diet on your own, talk with your treatment team or a dietitian if diarrhea continues.
When needed, your healthcare team may recommend medications or dietary adjustments based on the severity and cause of your symptoms.
Radiation can also irritate the bladder.
You may need to urinate more often than usual, experience a sudden urge to urinate, or notice burning or discomfort when passing urine.
Similar symptoms can also occur with other conditions, such as a urinary tract infection. If urinary symptoms become severe or persist, they should not automatically be assumed to be caused by radiation.
Bowel and bladder changes can occur during pelvic radiation therapy, but monitoring these symptoms and addressing them early can help prevent them from becoming more difficult to manage.
How Should You Care for Your Skin During Treatment?
External beam radiation therapy can cause changes to the skin in the treatment area.
The skin may become red, dry, itchy, sensitive, or irritated. These changes may become more noticeable as treatment continues.
Avoid rubbing or scratching the treated skin. Loose, comfortable clothing may also help reduce friction against sensitive areas.
Avoid exposing the treatment area to extreme heat or cold, such as heating pads or ice packs, unless your treatment team specifically recommends it. Protecting the treated skin from direct sun exposure is also important.
Before applying a new lotion, cream, ointment, or another potentially irritating product to the treatment area, check the skin-care instructions provided by your radiation therapy team.
Recommendations can differ depending on the area being treated, the condition of your skin, and the treatment protocol.
Rather than trying skin remedies found online, follow the skin-care instructions provided by the team responsible for your radiation treatment.
Is It Normal to Feel More Tired?
Fatigue is one of the most common symptoms experienced during radiation therapy.
You may become tired more easily than usual or still feel exhausted even after resting. For some people, fatigue gradually becomes more noticeable as treatment progresses.
Fatigue may be greater when chemotherapy is given at the same time, or when treatment affects appetite, nutrition, or sleep.
This does not necessarily mean that you should stop all physical activity and stay in bed throughout the day.
If your condition allows, short walks and light daily activities may be helpful. On days when you feel particularly tired, however, your body may need more rest.
The goal is not to force yourself to maintain exactly the same routine you had before treatment. Instead, adjust your activity and rest according to your current energy level.
If fatigue suddenly becomes much worse or begins to interfere significantly with daily activities, tell your healthcare team. Other factors such as anemia, nutritional problems, or infection may need to be considered.
Vaginal Dryness and Stenosis Also Need Attention
Pelvic radiation therapy can affect the vagina.
During or after treatment, you may experience vaginal dryness or irritation. Some people also experience discomfort or pain during sexual activity.
One important long-term change is vaginal stenosis.
Radiation can cause scarring and fibrosis in vaginal tissues, which may make the vagina narrower, shorter, or less flexible.
These changes can affect sexual activity and may also make future pelvic examinations more difficult.
To help reduce the risk or severity of vaginal stenosis, some patients may be advised to use a vaginal dilator.
When to begin using a dilator, how often to use it, and how long to continue can vary according to the treatment and your recovery. A vaginal dilator should therefore be used according to the timing and instructions recommended by your treatment team.
Vaginal dryness, pain, and sexual health concerns do not need to be ignored simply because they may feel uncomfortable to discuss. They can have a meaningful effect on quality of life and can be discussed with your healthcare team.
Some Side Effects Can Appear After Treatment Ends
Many side effects that develop during radiation therapy gradually improve after treatment is completed.
However, not every effect disappears immediately.
Some problems may persist, and late effects can sometimes develop months or even years after radiation therapy.
After pelvic radiation, some people may experience long-term bowel or bladder changes. Vaginal dryness or stenosis can also persist.
Pelvic radiation may weaken the pelvic bones and increase the risk of fractures in some patients. Changes to lymphatic drainage can also contribute to lymphedema, which may cause swelling, particularly in the legs.
For people who have not yet reached menopause, pelvic radiation may affect ovarian function. This can lead to early menopause and reduced fertility.
These long-term effects do not occur in everyone. The risk depends on factors such as the treatment area, radiation dose, treatment method, age, and individual health.
For this reason, follow-up care remains important even after radiation therapy has ended.
New or persistent symptoms should be discussed during follow-up visits.
We will look more closely at fertility, fertility preservation, and the possibility of pregnancy after cervical cancer treatment in the next article.
Which Symptoms Should You Report Promptly?
Knowing that side effects can occur during radiation therapy does not mean that every symptom should simply be tolerated until your next appointment.
Contact your treatment team promptly if you develop severe or persistent diarrhea, have difficulty drinking enough fluids because of vomiting or other symptoms, experience significant pain when urinating or blood in the urine, develop a severe skin reaction or fever, or notice a sudden increase in fatigue that makes normal daily activities difficult.
You should also contact your treatment team if a new symptom is clearly different from your usual condition or is getting worse quickly.
Not every minor change means that something serious is happening. The important thing is to notice how your symptoms differ from your usual condition and ask your treatment team when you are unsure.
Managing Side Effects Is Part of Radiation Treatment
The goal of radiation therapy is not simply to endure every scheduled treatment session until it is finished.
Paying attention to changes in your body and managing side effects appropriately are also important parts of treatment.
Bowel and bladder changes, skin irritation, fatigue, vaginal dryness, and discomfort may occur, but their severity varies from person to person. Rather than assuming that you simply have to tolerate these symptoms because they are “part of treatment,” discuss meaningful changes with your healthcare team.
Follow-up care also remains important after radiation therapy ends so that persistent or late effects can be identified and managed.
Managing side effects during radiation therapy can help you continue treatment as safely as possible while also protecting your health and quality of life after treatment.
In the next article, we will explore another important question: Is pregnancy possible after cervical cancer treatment, and what options are available to preserve fertility?
References
National Cancer Institute (NCI). Radiation Therapy Side Effects.
Reviewed May 15, 2025.
https://www.cancer.gov/about-cancer/treatment/types/radiation-therapy/side-effects
National Cancer Institute (NCI). Cervical Cancer Treatment.
Updated April 3, 2025.
https://www.cancer.gov/types/cervical/treatment
American Cancer Society. Radiation Therapy for Cervical Cancer.
Last Revised July 1, 2025.
https://www.cancer.org/cancer/types/cervical-cancer/treating/radiation.html
Macmillan Cancer Support. Radiotherapy for Cervical Cancer.
https://www.macmillan.org.uk/cancer-information-and-support/treatments-and-drugs/radiotherapy-for-cervical-cancer
Macmillan Cancer Support. Pelvic Radiotherapy Side Effects.
https://www.macmillan.org.uk/cancer-information-and-support/treatment/types-of-treatment/radiotherapy/pelvic-radiotherapy/pelvic-radiotherapy-side-effects
Comments
Post a Comment