Asbestosis is a chronic, progressive inflammation of the lung. It is not contagious; rather asbestosis is from a prolonged period of exposure to large quantities of asbestos. When asbestos fibers are inhaled the fibers penetrate the respiratory passages and irritate, fill, inflame and scar the lung tissue. In advanced asbestosis, the lungs shrink, stiffen and become riddled with tiny holes.

The cause of asbestosis is typically from occupational exposure to asbestos. However, individuals may develop asbestosis if they inhale or are exposed to asbestos waste products near there homes. Family members or friends can develop the disease as a result of inhaling particles of asbestos dust that are on an exposed worker's clothes.

It is rare for someone to develop asbestosis that has not been exposed to large amounts of asbestos on a regular basis for at least ten years. The first symptom of asbestosis is usually shortness of breath. Also a dry cough is another early stage symptom.

As the disease progresses and lung damage increases, shortness of breath occurs when an individual is at a resting state. Recurrent respiratory infections and coughing up blood are also common symptoms of asbestosis. Other symptoms include: swelling of the feet, ankles or hands, chest pain, hoarseness and restless sleep. Asbestosis patients often have clubbed fingers.

Asbestosis is diagnosed from the results of x-rays, CT scans, other pulmonary tests and blood tests. X-rays that show spots on the lungs or heart are indicative of asbestosis. CT scans of the lungs will show raised patches, in an asbestosis patient. Also, pulmonary tests can asses a patient's ability to inhale or exhale. Blood tests are used to measure the concentration of oxygen and carbon dioxide in a patient's blood.

Treatment for asbestosis consists of exercise, to help improve the lung capacity. Antibiotics, such as, aspirin and bronchodilators are also used when treating asbestosis. Diuretics are prescribed for some patients.

Although asbestosis can not be cured, its symptoms can be controlled.