Labrador lung is a lung disease caused by breathing in air dust that contains inorganic compounds that can affect lung function (silica and inorganic compounds, such as iron). The dust can stay in the lungs for long periods without being detected and can cause problems many years after it enters the body. Many individuals with Labrador lung are miners, who are susceptible to breathing harmful dust. Common symptoms experienced by individuals include heavy breathing, vigorous coughing, whooping cough, and asthma. Doctors diagnose this disease through a thorough physical examination of the lungs. Signs of scarring tissue in the lungs often confirms the diagnosis. Treatment is based on a case-by-case basis and depends on the severity of the disease. In severe cases, doctors may suggest patients undergo surgery to fix lung problems.