Pneumonia is an infection that causes inflammation in one or both air sacs in the lungs, occasionally causing them to fill up with fluid or pus. In some patients—particularly children, the elderly, infants, and people with weak or compromised immune systems—pneumonia can be life threatening. Learn more about this condition on this page from the doctors at Washington Township Medical Foundation in Fremont, CA. If you have questions about pneumonia or related symptoms, call your doctor.
Pneumonia may be caused by contact with a virus or bacteria, as well as fungi. This includes the causes of viral pneumonia influenza and respiratory syncytial virus (RSV) and Streptococcus pneumonia (pneumococcus), and the bacterial cause known as bacteria Haemophilus influenzae type b (Hib), which is also responsible for causing meningitis.
The most common types of pneumonia symptoms, according to the American Lung Association, are as follows:
Other symptoms of pneumonia that are less common include: