Ask the Expert: Feeling Your Best

How to feel your best during Radiation Therapy

Radiation therapy involves the use of high energy x-rays to kill tumour cells. Although patients generally feel quite well on treatment, here are some typical side effects with advice on how to deal with each one.

Headache and nausea

As tumour cells are killed, brain swelling may occur, resulting in headache and nausea. Your doctor may prescribe a steroid medication to reduce the swelling. This medication is very effective but can cause a number of side effects, especially if used for long periods. It should not be stopped abruptly, so speak to your health care team about how and when to discontinue it. You may also benefit from medications used specifically to treat nausea.

Hair loss, hearing and skin changes

Hair loss will occur where radiation beams are directed and may be temporary or permanent, depending on the dose delivered. If you are interested in wearing a wig and would like to match your natural colour and style, shop for one before the hair begins to fall out, usually in the second or third week of treatment.

The scalp may become tender and red, like a sunburn. Use a mild shampoo with lukewarm water and avoid dyes, hair dryers and curling irons. If you develop itching or flaking skin, your radiation therapists will advise you about the use of appropriate creams. Oozing skin or pain should be promptly reported. Cover your head and ears to protect your skin from sun, wind and extreme temperatures.

Hearing may be reduced by a buildup of wax in the ear. A few drops of mineral oil in the ear canal will help soften the wax and allow it to be dislodged. Avoid putting anything else into the ear.


Fatigue is a common side effect, and usually occurs midway through treatment. Activity and exercise may help to prevent or decrease fatigue, but you should also allow for rest periods in the day. Plan your day so that your most demanding activities occur when your energy is likely to be best. If possible, delegate some responsibilities to family and friends. Rarely, extreme sleepiness and fatigue may occur, accompanied by loss of appetite and nausea. This should be reported to your health care team.

Bleeding and infections

If you are taking chemotherapy with radiation, remember to have your blood drawn regularly, and monitor for signs suggesting that your blood cells have been affected by the treatment. Of greatest concern is the effect on white blood cells (that fight infection), and platelets (that prevent excessive bleeding). Report signs of infection, especially a fever greater than 38.5º C (101º F), or go to your local emergency room. Also report the appearance of bruises, red spots or unusual bleeding.
It is important to let your health care team know how you’re doing so that they can offer you guidance and support throughout your treatment.

You can download this information as a Brain Tumour Foundation of Canada Information Sheet (pdf).
Thank you to Rosemary Cashman, Nurse Practitioner at the BC Cancer Agency. Rosemary volunteers for Brain Tumour Foundation of Canada as a member of our Professional Advisory Group and is the recipient of the 2007 Canadian Association of Nurses of Oncology.

Return to Information Sheets here.

Share This

Featured Story

Hayden's Story: The eyes have it

Eyes might be the window to the soul, but in Hayden’s case, they were telling her Mom that something was seriously wrong with her baby. Hayden’s Mom, Candice, is forever grateful to the ER physician who spotted her brain tumour and the health care professional team who subsequently saved her eyesight. Candice is now advocating for every parent to look to the eyes.

Learn more


Tracey’s Story: Hope and Optimism

Headaches are like house guests. Some come and go. Others don’t want to leave; and become a real nuisance. Tracey’s headache lasted a...

Learn more

Andrew’s story of being tough

What do you see when you look in the mirror? When Andrew’s friend looked at him, he saw an immensely tough person and wanted to let...

Learn more

Upcoming Events

  • 15/Jan/2019: North Bay Support Group: Meets at St. Luke's Catholic Elementary School, 225 Milani Road, North Bay.... Learn more >
  • 16/Jan/2019: Windsor Support Group: Meets at the United Way, Unit A1, 300 Giles Blvd. East... Learn more >
  • 16/Jan/2019: Calgary Support Group: Meets at Wellspring Calgary, 1404 Home Road NW, Calgary, Alberta, T3B 1G7... Learn more >
  • 16/Jan/2019: Niagara Region Support Group: Meets at Wellspring Niagara, 3250 Schmon Parkway, Thorold, ON, L2V 4Y6... Learn more >
View All Events >
Thank you to the donors whose contributions make this website and all programs, services and research possible.

Copyright © 2019 Brain Tumour Foundation of Canada. Charitable Registration #BN118816339RR0001