Condition Basics
What is pneumonia?
Pneumonia is a lung infection that can make you very sick. You may cough, have a fever, and have trouble breathing. It often clears up in a few weeks with treatment. It can usually be treated at home. But some people, like older adults and babies, may need to go to the hospital.
What causes it?
Germs called bacteria or viruses usually cause pneumonia. Pneumonia usually starts when you breathe the germs into your lungs. You may be more likely to get it after having a cold or the flu. Having a chronic disease like asthma, COPD, heart disease, cancer, or diabetes also makes you more likely to get pneumonia.
What are the symptoms?
Symptoms of pneumonia may include a cough, a fever, shortness of breath, or the chills. You may feel very tired or very weak. Or you may have chest pain that often feels worse when you cough or breathe in.
How is it diagnosed?
Your doctor will ask you about your symptoms and do a physical exam. Your doctor may order a chest X-ray and blood tests. This is usually enough for your doctor to know if you have pneumonia. You may need more tests if your symptoms are bad or you have other health problems.
How is pneumonia treated?
Pneumonia that is caused by bacteria is treated with antibiotics. Rest, fluids, and medicines to reduce fever can help you feel better. If your symptoms are bad or you have a weak immune system, you may need hospital care. If pneumonia is caused by a virus, antibiotics don't help.
