How does percussion for lungs help in diagnosing respiratory conditions?

Percussion for lungs involves tapping on the chest to listen for sounds that can indicate abnormalities in the lungs. This technique helps in diagnosing respiratory conditions by detecting changes in the density of lung tissue, presence of fluid, or air trapped in the lungs. Abnormal sounds can suggest conditions like pneumonia, bronchitis, or Asthma, guiding healthcare providers in making an accurate diagnosis.