Pneumonia is a serious disease affecting lungs, and therefore breathing: a most uncomfortable situation. When a doctor examines the patient and diagnoses pneumonia it is because he can hear the lungs make crackling, bubbling, and rumbling sounds when the patient inhales. Pneumonia is caused by bacteria - germs reaching the lungs. What happens then is that the lungs' air sacs (alveoli) become inflamed and fill with fluid.
This inflammation of the tissue may affect one or both lungs.The consequent symptoms of pneumonia, a cough, fever, and trouble breathing, usually require more than just bed rest. Oxygen may have trouble reaching the blood stream.
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