Why do side effects occur?
Radiation may affect healthy cells in and near the treatment area. Reactions vary according to dose, location, technique, other treatments and individual characteristics.
Early side effects
Fatigue and skin changes are possible. Depending on the site, patients may experience mouth or throat irritation, difficulty swallowing, nausea, diarrhoea or urinary symptoms. Not everyone experiences these problems.
Skin and daily care
Clean the area gently and use products recommended by your team. Avoid friction and strong sun exposure to irritated skin. Do not begin supplements, creams or special diets without checking whether they are appropriate.
When do symptoms improve?
Some acute reactions peak near the end of treatment or shortly afterwards, then gradually settle. Certain effects may last longer or arise later, making appropriate follow-up essential.
Tell your team what changes
Report symptoms that affect food intake, hydration, sleep, walking or your daily routine. Your team can recommend medicines, rehabilitation and supportive care tailored to your situation.
Side effects depend on the treated area
Head and neck treatment may affect swallowing and saliva; abdominal or pelvic treatment may affect digestion; treatment to the chest may affect swallowing or cause cough. Tell your team promptly about changes that affect your ability to eat, drink, breathe or carry out usual activities. Late side effects are possible and should be discussed for the individual plan.