In spontaneous<unk> , the patient appears normal. Patient with<unk>  secondary to an exacerbation of asthma may appear distressed. On physical examination, the most pathognomic sign of<unk>  is Hamman's sign, which is mediastinal crunch or click present on auscultation over the cardiac apex and the left sternal border synchronous with the heartbeat. Subcutaneous emphysema can also be detected in a patient with<unk> .
Pneumomediastinum physical examination
Pneumothorax physical examination
Air embolism physical examination
Farmer's lung physical examination
Bronchitis physical examination
Hemoptysis physical examination
Tracheitis physical examination
Chest pain physical examination