1 At age 65, one out of three people has a hearing loss. 2  60 percent of the people with hearing loss are either in the work force or in educational settings.
The Causes of Pneumomediastinum. Pneumomediastinum is the name given to air in the mediastinum. Pneumomediastinum is often caused by injury or disease. It typically results when air leaks from your lungs into your mediastinum. Common causes of pneumomediastinum include: Excessive coughing. Repeated bearing down such as pushing during childbirth.
Back to Top Causes. This type of pneumonia is caused by the fungus Pneumocystis jiroveci. This fungus is common in the environment and does not cause illness in healthy people.However, it can cause a lung infection in people with a weakened immune system due to:1  Cancer.ack to Top Causes. This type of pneumonia is caused by the fungus Pneumocystis jiroveci. This fungus is common in the environment and does not cause illness in healthy people.