Paradoxical breathing is seen in
Two of the symptoms of flail chest are chest pain and shoness of breath. It occurs when multiple adjacent ribs are broken in multiple places, separating a segment, so a pa of the chest wall moves independently. This so-called "paradoxical breathing" is painful and increases the work involved in breathing Ref Davidson 23rd edition pg 579
Pneumonia
Pneumothorax
Atelectasis
Flial chest
Respiratory system