Pneumonia is an infection of the lungs. Most pneumonias are caused by bacterial infections, and the most common cause in the United States is the bacteria Streptococcus pneumoniae. Other bacteria, such as Mycoplasma and Legionella, as well as certain viruses, also can cause pneumonia. However, because these less common infections do not always cause all of the classic pneumonia symptoms, they often are called atypical pneumonias. Atypical pneumonias most commonly occur in people...
Read moreSource: ADAM Encyclopedia
General Symptoms. The symptoms of some bacterial pneumonias, such as pneumococcal pneumonia, develop very quickly and typically include:A single... Read more »
What is asthma? Asthma is a disease in which the airways become blocked or narrowed. These effects are usually temporary, but they cause shortness of... Read more »
Source: ADAM Encyclopedia
Bronchopneumonia; Community-acquired pneumonia Symptoms The most common symptoms of pneumonia are: Cough (with some... Read more »
Source: ADAM Encyclopedia
Pneumonia - viral; "Walking pneumonia" - viral SymptomsSymptoms of viral pneumonia often begin slowly and may not be severe at first.The most common... Read more »
Source: HealthCentral Encyclopedia
Pneumonia is a serious infection or inflammation of one or both lungs.Pneumonia is caused by the inhalation of infected microorganisms (tiny,... Read more »