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Pneumonia. Pneumonia is an inflammatory condition of the lung primarily affecting the small air sacs known as alveoli. [3] [14] Symptoms typically include some combination of productive or dry cough, chest pain, fever, and difficulty breathing. [15] The severity of the condition is variable.
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- Overview
- Symptoms
- Causes
- Risk Factors
- Complications
- Prevention
Pneumonia is an infection that inflames the air sacs in one or both lungs. The air sacs may fill with fluid or pus (purulent material), causing cough with phlegm or pus, fever, chills, and difficulty breathing. A variety of organisms, including bacteria, viruses and fungi, can cause pneumonia. Pneumonia can range in seriousness from mild to life-th...
The signs and symptoms of pneumonia vary from mild to severe, depending on factors such as the type of germ causing the infection, and your age and overall health. Mild signs and symptoms often are similar to those of a cold or flu, but they last longer. Signs and symptoms of pneumonia may include: 1. Chest pain when you breathe or cough 2. Confusi...
Many germs can cause pneumonia. The most common are bacteria and viruses in the air we breathe. Your body usually prevents these germs from infecting your lungs. But sometimes these germs can overpower your immune system, even if your health is generally good. Pneumonia is classified according to the types of germs that cause it and where you got t...
Pneumonia can affect anyone. But the two age groups at highest risk are: 1. Children who are 2 years old or younger 2. People who are age 65 or older Other risk factors include: 1. Being hospitalized.You're at greater risk of pneumonia if you're in a hospital intensive care unit, especially if you're on a machine that helps you breathe (a ventilato...
Even with treatment, some people with pneumonia, especially those in high-risk groups, may experience complications, including: 1. Bacteria in the bloodstream (bacteremia).Bacteria that enter the bloodstream from your lungs can spread the infection to other organs, potentially causing organ failure. 2. Difficulty breathing.If your pneumonia is seve...
To help prevent pneumonia: 1. Get vaccinated.Vaccines are available to prevent some types of pneumonia and the flu. Talk with your doctor about getting these shots. The vaccination guidelines have changed over time so make sure to review your vaccination status with your doctor even if you recall previously receiving a pneumonia vaccine. 2. Make su...
Pneumonia is a disease of the lungs and the respiratory system. The lung contains many small bulbs, or sacs, called alveoli. These help to take out oxygen from the air. In the case of pneumonia, these bulbs become inflamed. They fill up with a fluid which is called pus, and can no longer absorb as much oxygen as before.
Learn about pneumonia, a serious infection of the lungs caused by bacteria, viruses, or fungi. Find out the symptoms, causes, diagnosis, treatment, prevention, and complications of pneumonia.
Learn about pneumonia, a form of acute respiratory infection that can cause mild to life-threatening illness in people of all ages. Find facts, questions and answers, publications, multimedia and campaigns from WHO on pneumonia prevention and treatment.
