While both sounds can be caused by infections and fluid buildup in the lungs, there are a few conditions that are more unique to each sound. Conditions that can cause both rhonchi and rales include: pneumonia. bronchitis.

What causes rales in the lungs?

Rales. Small clicking, bubbling, or rattling sounds in the lungs. They are heard when a person breathes in (inhales). They are believed to occur when air opens closed air spaces.

Does pneumonia cause rales?

Crackling (Rales)

You can have fine crackles, which are shorter and higher in pitch, or coarse crackles, which are lower. Either can be a sign that there's fluid in your air sacs. They can be caused by: Pneumonia.