Crackles heard in the lungs of a person with pneumonia using a stethoscope. Crackles, crepitations, or rales (/ËrÉËlz/ RAHLZ or /ËrÃ¦lz/ RALZ) are the clicking, rattling, or crackling noises that may be made by one or both lungs of a human with a respiratory disease during inhalation. They are often heard only with a stethoscope (on auscultation).
The symptoms of chest congestion can be listed as under. 1  Coughing. 2  Shortness of breath. 3  Labored breathing. 4  Chest pain. 5  Dizziness. 6  Runny nose. 7  Wheezing. 8  Discomfort. 9  Blood in cough. 10  Loud noises while breathing.
Lung cancer symptoms. Early symptoms and signs of lung cancer. There may be no symptoms at the onset of the disease. When present, common symptoms of lung cancer may include: 1  Coughing: This includes a persistent cough that doesn't go away or changes to a chronic smoker's cough,â such as more coughing or pain. 2  Coughing up blood: Coughing up blood or rust-colored sputum (spit or phlegm) should always be discussed with your doctor.