The health body adds: “You may be asked to have a blood test to rule out some of the possible causes of your symptoms, such as a chest infection.”
Am I at risk?
Most cases of lung cancer are caused by smoking, although people who have never smoked can also develop the condition.
In fact, “up to a quarter of lung cancers are diagnosed in people who have never smoked”, states the BMJ article.
Occupational exposure and pollution is a lesser-known but potentially significant risk factor.