How to determine if u have a collapsed lung?

Examination: Estimated at least 10% spontaneous pneumothorax are asymptomatic. The first line of diagnosis for large pneumothorax is a good history and physical examination (stethoscope). Most smaller pneumothoraces can be diagnosed with good 2 view chest x-ray series. Occasionally, a ct-scan may be necessary.

Difficulty breathing: Shortness of breath, chest pain, air under the skin, etc.