Pneumonia Definition & Meaning

Pneumonia is a lung infection that causes inflammation and fluid accumulation in the lungs. It is the most common type of pneumonia, and can be serious if not treated promptly. 

Pneumonia can be caused by a number of different viruses, bacteria, and fungi, and can be contracted through the air, from contact with infected bodily fluids, or from close contact with someone who is infected.

Symptoms of pneumonia include chest pain, shortness of breath, fever, coughing, and fatigue. If left untreated, pneumonia can lead to respiratory failure and even death. 

Treatment for pneumonia typically includes antibiotics and respiratory support, depending on the underlying cause.