Side effects of lung cancer

Lung cancer may cause a persistent cough, breathlessness, chest discomfort, coughing blood, tiredness, reduced appetite or weight loss. A hoarse voice can occur when a tumour affects nearby nerves; hoarse voice is not specific to cancer and has many other causes. Lung cancer can also spread beyond the chest, including to the brain, where symptoms may include headache, weakness, confusion, seizures or changes in balance. The cancer itself and treatments such as chemotherapy, radiotherapy or surgery can produce different effects, so timing and severity matter.

Tell the oncology team about every new or worsening symptom, including changes in breathing, swallowing, sleep, mood or daily activity. Keep a simple record of when it starts, what makes it better or worse, and any medicines already used. Your team may adjust treatment, prescribe relief for pain or nausea, support nutrition, or assess infection, fluid around the lung or another cause. Palliative care can be added at any stage to relieve symptoms and support you alongside cancer treatment. Treatment choices may include genomic tumour profiling, chemotherapy, radiotherapy or lung lobectomy, depending on the cancer and your overall health.

Seek emergency help for severe or rapidly worsening breathlessness, coughing a large amount of blood, new confusion, a seizure, sudden weakness, or chest pain with sweating or faintness. Contact your cancer team promptly for fever, worsening cough, new hoarseness, inability to keep fluids down, or a clear decline in activity. Do not wait for a routine appointment when symptoms change quickly.

Which symptoms are most likely from the cancer, and which could be treatment effects? What should I record at home? Who should I call outside clinic hours? Could another test explain this change, and what symptom-relief options fit my treatment plan?