Pneumonia is a lung infection and/or inflammation of the air sacs of one or both lungs. Bacteria, viruses, and fungi can ...

Medically reviewed by Anju Goel, MD Pneumonia symptoms can seem as mild as the flu, but they vary based on the cause and severity of the lung infection. Knowing the various signs and symptoms of ...

If your cough has a wheezing sound or is so bad that it's hard to breathe, it's important to see a doctor. This could mean your lungs are having difficulty clearing excess fluid, a common issue ...

Learn how to know if you have bronchitis vs. pneumonia, ... Wheezing or a whistling sound while breathing; ... Experts Say White Lung Pneumonia is 'Nothing to Be Alarmed About'—Here's What to Know.

Lung cancer raises your pneumonia risk. Learn how these conditions are linked, how they’re different, and about their diagnosis, treatment, and prevention.

Pneumonia, a lung infection, can be severe and even deadly for people in high-risk populations, such as infants, children 2 years old or younger, adults 65 years old or older, and people with weak ...

Small cell lung cancer (SCLC) may increase the risk of pneumonia due to a weakened immune system or structural changes to the lungs. SCLC is one of the two main types of lung cancer. Pneumonia is ...