External Beam Radiation Therapy

Medically reviewed by Drugs.com. Last updated on May 4, 2025.

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EBRT is used to kill cancer cells or stop them from spreading. EBRT is also used to decrease pain caused by metastasis. Radiation is a very strong type of x-ray. EBRT may be combined with other treatments such as medicine, chemo, or surgery. It is usually done in a hospital or clinic. You may need EBRT every day over a period of several weeks.

DISCHARGE INSTRUCTIONS:

Call, or have someone call, your local emergency number (911 in the US) if:

• You have chest pain or shortness of breath.
• You have changes in your ability to see, speak, or think.
• You have a severe headache or a seizure.

Call your doctor or oncologist if:

• You suddenly have trouble remembering things.
• You have a fever.
• You get a cold or flu.
• You cannot make it to your next treatment session.
• You have questions or concerns about your condition or care.

Drugs used to treat this and similar conditions

Care for your skin:

• Bathing:
  • Do not rub off the markings made by your healthcare provider. They show your healthcare provider where to place the radiation.
  • Use a mild soap and warm water to bathe. Ask your healthcare provider what soaps are okay to use.
  • Do not use very hot or very cold water on the areas of your skin that are being treated.
  • Let the soap and water gently run over the treatment area. Do not rub the treatment area.
  • Do not shower more than one time each day. Limit baths to 2 times each week for 30 minutes or less.
  • Gently pat your skin dry after you bathe.
• Ask if it is okay to shave the area being treated. Ask your healthcare provider what shaving creams or shaving lotions are okay to use during treatment. Only use an electric razor to shave. Do not put aftershave on your skin.
• Protect your skin from the sun. If your healthcare provider says it is okay, wear sunscreen when you are in the sun. Use sunscreen that is at least SPF 30. Make sure the entire area of skin being treated is covered when you are outside. Wear dark clothing or UV-protected clothing. Do not use tanning beds or sun lamps. Your treated skin will continue to be at risk for skin cancer after treatment ends.
• Do not go in swimming pools. The chemicals may irritate and damage your skin during treatment. Ask your healthcare provider how long you should wait to swim after treatment ends.

Self-care:

• Drink liquids as directed to help prevent dehydration. Ask how much liquid to drink each day and which liquids are best for you.
• Eat a variety of healthy foods. Healthy foods include fruits, vegetables, whole-grain breads, low-fat dairy products, beans, lean meats, and fish. Several small meals a day may be easier to eat than a few large meals.

Follow up with your oncologist as directed:

You may need to return every day for several weeks. You will need to see your oncologist for tests or ongoing treatment. Write down your questions so you remember to ask them during your visits.

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The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

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