Catching cancer early can mean more treatment options and better outcomes. But when it comes to lung cancer, early detection can be a challenge. Symptoms often don’t start until the cancer has already begun to spread. And when they do occur, it’s easy to mistake them for signs of another condition. That’s why it’s so important to know the common symptoms—and when to see a doctor. Lung cancer symptoms often resemble those of other conditions. Some people have only general symptoms, such as feeling very