Pneumonia
An in-depth report on the causes, diagnosis, treatment, and prevention of pneumonia.
The Basics
A Closer Look
Pneumonia - Animation
Pneumonia
Animation
Pneumonia
Pneumonia is an inflammation of the lungs caused by an infection. Many different organisms can cause it, including bacteria, viruses, and fungi. Pneumonia is a common illness that affects millions of people each year in the United States. The symptoms of pneumonia range from very mild to very severe, even fatal. The severity depends on the type of organism causing pneumonia as well as the age and underlying health of the individual.
Pneumonia
illustration
Chickenpox, acute pneumonia - chest x-ray
This chest x-ray shows cloudiness throughout the lungs, caused by acute pneumonia following chickenpox. Pneumonia, as a complication of chickenpox, rarely occurs in children, but occurs in about one-fifth of adults.
Chickenpox, acute pneumonia - chest x-ray
illustration
Hospital-acquired pneumonia
Pneumonia acquired in the hospital is a very serious infection because the patient's defense mechanisms are often impaired by illness, and the infecting organisms are more dangerous than the ones generally encountered in the community.
Hospital-acquired pneumonia
illustration
CMV pneumonia
Cytomegalovirus is a large herpes-type virus commonly found in humans that can cause serious infections in people with impaired immunity. CMV pneumonia is treated with antiviral medications, which may stop the replication of the virus but will not destroy it.
CMV pneumonia
illustration
Pneumococcal pneumonia
This is a photomicrograph of the organism that causes pneumococcal pneumonia. The bacteria are round, but join together to form chains. Frequently, these join together to form pairs and are called diplococci; the prefix di means two.
Pneumococcal pneumonia
illustration
Pneumonia
Pneumonia is an inflammation of the lungs caused by an infection. Many different organisms can cause it, including bacteria, viruses, and fungi. Pneumonia is a common illness that affects millions of people each year in the United States. The symptoms of pneumonia range from very mild to very severe, even fatal. The severity depends on the type of organism causing pneumonia as well as the age and underlying health of the individual.
Pneumonia
illustration
Chickenpox, acute pneumonia - chest x-ray
This chest x-ray shows cloudiness throughout the lungs, caused by acute pneumonia following chickenpox. Pneumonia, as a complication of chickenpox, rarely occurs in children, but occurs in about one-fifth of adults.
Chickenpox, acute pneumonia - chest x-ray
illustration
Hospital-acquired pneumonia
Pneumonia acquired in the hospital is a very serious infection because the patient's defense mechanisms are often impaired by illness, and the infecting organisms are more dangerous than the ones generally encountered in the community.
Hospital-acquired pneumonia
illustration
CMV pneumonia
Cytomegalovirus is a large herpes-type virus commonly found in humans that can cause serious infections in people with impaired immunity. CMV pneumonia is treated with antiviral medications, which may stop the replication of the virus but will not destroy it.
CMV pneumonia
illustration
Pneumococcal pneumonia
This is a photomicrograph of the organism that causes pneumococcal pneumonia. The bacteria are round, but join together to form chains. Frequently, these join together to form pairs and are called diplococci; the prefix di means two.
Pneumococcal pneumonia
illustration
Pneumonia
An in-depth report on the causes, diagnosis, treatment, and prevention of pneumonia.
The Basics
A Closer Look
Pneumonia
An in-depth report on the causes, diagnosis, treatment, and prevention of pneumonia.
The Basics
A Closer Look
Review Date: 11/27/2020
Reviewed By: Denis Hadjiliadis, MD, MHS, Paul F. Harron Jr. Associate Professor of Medicine, Pulmonary, Allergy, and Critical Care, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.