When you have radiation treatment for cancer, your body goes through changes.
About 2 weeks after your first radiation treatment:
- Your skin over the treated area may turn red, start to peel, get dark, or itch.
- Your body hair will fall out, but only in the area being treated. When your hair grows back, it may be different than before.
- You may have bladder discomfort.
- You may have to urinate often.
- It may burn when you urinate.
- You may have diarrhea and cramping in your belly.
Women may have:
- Itching, burning, or dryness in the vaginal area
- Menstrual periods that stop or change
- Hot flashes
Both men and women may lose interest in sex.
When you have radiation treatment, color markings are drawn on your skin. DO NOT remove them. These show where to aim the radiation. If they come off, DO NOT redraw them. Tell your doctor instead.
Take care of the treatment area.
- Wash gently with lukewarm water only. DO NOT scrub.
- DO NOT use soap.
- Pat yourself dry instead of rubbing.
- DO NOT use lotions, ointments, perfumed powders, or perfumed products on this area. Ask your doctor what is OK to use.
- Keep the area that is being treated out of direct sunlight.
- DO NOT scratch or rub your skin.
- DO NOT put heating pads or ice bags on the treatment area.
Tell your health care provider if you have any breaks or openings in your skin.
Wear loose-fitting clothing around your stomach and pelvis.
- Women should not wear girdles or pantyhose.
- Cotton underwear are best.
Keep the buttocks and pelvic area clean and dry.
Drink plenty of liquids: 6 to 8 cups (1.5 to 2 liters) a day. But avoid orange juice, grapefruit juice, and other citrus juices.
Your provider may place you on a low-residue diet that limits the amount of roughage you eat. You need to eat enough protein and calories to keep your weight up. Ask your provider about liquid food supplements. These can help you get enough calories.
DO NOT take a laxative. Ask your doctor about medicines to help with diarrhea or the need to urinate often.
You may feel tired after a few days. If so:
- Do not try to do too much in a day. You probably will not be able to do everything you are used to doing.
- Get more sleep at night. Rest during the day when you can.
- Take a few weeks off work, or work less.
Watch out for early signs of lymphedema (fluid build-up). Tell your doctor if you have:
- Feelings of tightness in your leg, or your shoes or socks feel tight
- Weakness in your leg
- Pain, aching, or heaviness in your arm or leg
- Redness, swelling, or signs of infection
It is normal to have less interest in sex during and right after radiation treatments end. Your interest in sex will probably come back after your treatment is over and your life returns to normal.
Women who get radiation treatment in their pelvic areas may have shrinking or tightening of the vagina. Your provider will advise you about using a dilator, which can help gently stretch vaginal walls.
Your provider may check your blood counts regularly, especially if the radiation treatment area on your body is large.
Radiation of the pelvis - discharge; Cancer treatment - pelvic radiation; Prostate cancer - pelvic radiation; Ovarian cancer - pelvic radiation; Cervical cancer - pelvic radiation; Uterine cancer - pelvic radiation; Rectal cancer - pelvic radiation
Doroshow JH. Approach to the patient with cancer. In: Goldman L, Schafer AI, eds. Goldman's Cecil Medicine. 25th ed. Philadelphia, PA: Elsevier Saunders; 2016:chap 179.
National Cancer Institute. Radiation therapy and you: Support for people with cancer. Updated May 2007. www.cancer.gov/publications/patient-education/radiationttherapy.pdf. Accessed March 20, 2016.
Review Date 2/6/2016
Updated by: Laura J. Martin, MD, MPH, ABIM Board Certified in Internal Medicine and Hospice and Palliative Medicine, Atlanta, GA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.