Definition of Pleurisy:

Pleurisy is inflammation of the lining of the lungs that causes pain when you take a breath or cough.

Causes, incidence, and risk factors:

Pleurisy may develop when you have lung inflammation due to infections such as pneumonia or tuberculosis. It may also occur with:

• Asbestos-related disease
• Certain cancers
• Chest trauma
• Pulmonary embolus
• Rheumatic diseases

When you have pleurisy, the normally smooth lining of the lung (the pleura) become rough. They rub together with each breath, and may produce a rough, grating sound called a "friction rub." The health care professional can hear this sound with the stethoscope, or by placing an ear against the chest.