People who are too thin are more likely to develop pneumothorax, but being too thin does not necessarily lead to pneumothorax, only that the incidence of pneumothorax is relatively higher.
For people with thin body type, their chest muscles are relatively undeveloped and subcutaneous fat is relatively small, which is not enough to fight against the sharp increase of intrathoracic pressure when performing strenuous exercise, lifting heavy objects, or coughing violently, and it is easy to injure the pleura, resulting in rupture of the pleura and air entering the pleural cavity, which will trigger pneumothorax.
At the same time, people with a thin body type are more likely to combine with pulmonary blisters, which can also lead to pneumothorax when the alveoli rupture.
However, not all people with thin body type will have pneumothorax, and once pneumothorax occurs, it is recommended to seek timely medical treatment and standardized treatment.