Side effects depend on the part of the body treated, the dose, the number of treatments, any other treatments you receive (such as chemotherapy), and your overall health. Many people have only mild effects, and most effects are temporary.
Disclosure: This page gives general information, not medical advice for your situation — always follow the guidance of your own care team.
Most side effects build up slowly over the course of treatment and settle in the weeks after it ends. The two most common are:
Your team will tell you what to expect for your specific treatment, and will check on you at every visit.
Skin in the treated area may become pink, dry, or sensitive. Treat it gently: wash with lukewarm water, pat dry, and avoid extremes of heat or cold. On treatment days, avoid lotions, creams, powders, or deodorant on the skin in the treatment area unless your team advises otherwise.
Feeling more tired than usual is common during radiation therapy. Rest when you need to, stay as active as you comfortably can, and ask others for help with daily tasks. Tell your team if tiredness becomes severe or stops you doing normal things.
Eating well and drinking enough fluids helps your body cope with treatment. Some treatments — especially to the head, neck, or abdomen — can affect appetite, taste, or swallowing. Tell your team early if eating becomes difficult; a dietitian can help.
It is normal to feel worried, low, or overwhelmed at times during cancer treatment. Support is available — for you and for your family. See Support Services and Practical Help for social work, psychological support, financial counseling, and more.
Contact the department promptly for a high fever, severe pain, heavy bleeding, trouble breathing, or any symptom that worries you. No concern is too small to mention at your next visit.
In an emergency, seek immediate medical care.
