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How does pneumonia occur?

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Average rating: 5 out of 5 star rating

How does pneumonia occur?

You may breathe-in some bacteria, viruses, or other germs. If you are normally healthy, a small number of germs usually doesn't matter as they are trapped in the sputum and are killed by the immune system. Sometimes the germs multiply and cause lung infections. This is more likely to happen if you are already in poor health. For example: if you are frail or elderly; if you have a chest disease; if you have a low immunity to infection with such things as alcohol dependence, AIDS, or another serious illness. However, even healthy people sometimes develop pneumonia.

How serious is pneumonia?

  • If you were previously well. With treatment, you are likely to make a full recovery. However, some bacteria, viruses, and other germs are more serious than others. Some people become very ill and require hospital admission. Occasionally, some people who were previously well die from pneumonia.
  • If you are already in poor health. You are more likely to become seriously ill with pneumonia. Pneumonia is a common cause of death in people who are already in poor health. For example, people in the late or terminal stages of a cancer.

What are the symptoms of pneumonia?

Typical symptoms are cough, fever, sweats, shivers, being off food, and feeling generally unwell. Headaches, and aches and pains are common. You usually make more sputum which may become yellow/green, and is sometimes bloodstained.

You may become breathless, breathe fast, and develop a 'tight chest'. A sharp pain in the side of the chest may develop if the infection involves the pleura. (This is the membrane between the lung and the chest wall.) A doctor may hear 'crackles' in the chest when listening with a stethoscope.

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