Persistent cough, chest pain, or breathlessness? Pulmonologist explains when these could signal lung cancer

Cough is one of the most common reasons people visit a doctor. Most coughs are harmless and settle within a few days or weeks. But what if the cough refuses to go away? Could it be a warning sign of something more serious? Dr Apar Jindal, director, pulmonology and transplant physician, Max Smart Hospital, Saket, shared warning signs of lung cancer.​Also read | Oncoplastic surgeon shares why breast cancer is rising among younger women and the early signs we often overlookEarly signs of lung cancerDr Apar Jindal highlighted that lung cancer often begins quietly. In its early stages, it may cause no symptoms at all, or only a mild cough that is easily mistaken for a lingering infection or the effects of smoking, or, at best, an allergy.