Side effects of radiation for lung cancer

Radiation affects cells in and around the planned treatment area, so the exact effects depend on the target and nearby organs. Tiredness, skin redness or soreness, cough, chest discomfort and reduced appetite may develop during treatment. If the oesophagus is in the field, swallowing can become painful or difficult. Hoarseness may occur when nearby structures are affected, although it has many causes. In the weeks or months afterward, lung inflammation can produce cough or breathlessness. Radiation can be combined with chemotherapy, surgery or other care, and combined treatments may change the symptoms you notice. A new symptom is worth discussing rather than assuming it is expected.

Report symptoms at each visit, including changes in breathing, swallowing, skin, sleep and activity. Use only skin products recommended by the radiation team, keep the area gently protected, and pace tasks with planned rest. Choose foods and fluids that are comfortable if swallowing hurts, and ask for nutrition support if eating becomes difficult. Your team may offer medicines for pain, nausea, cough or inflammation and may investigate infection or fluid around the lung. Palliative care can help with symptoms during cancer treatment. Follow instructions for any chemotherapy or surgery given with radiotherapy.

Call emergency services for severe breathlessness, blue lips, sudden chest pain with faintness, coughing a large amount of blood, or sudden confusion. Contact your cancer team promptly for fever, rapidly worsening cough, increasing chest pain, inability to swallow fluids, or breathlessness that is new or limits normal activity. A clinician may need to separate radiation effects from infection, a clot or cancer-related change.

Which organs are close to my radiation field? When should symptoms begin to improve? What should I use on my skin? Who should I call overnight, and how will cough or breathing changes be checked?