Question about risk factors for spontaneous pneumothorax--any particular age or race?

Age is a factor: Spontaneous pneumo is more common in males and usually occurs in the early twenties. Occurance in females and after age foorty is less common. Other risk factors include smoking, family history and a history of Marfan syndrome. Women with endometriosis with thorasic involvement may be at higher risk. Incidence appears to vary based on geography but the reason is not clear.

Yes: Primary spontaneous pneumothoraces (sps) generally occur in people aged 20-30 years. The male:female ratio is estimated 6 to 1. Risk factors for primary and secondary spontaneous pneumothorax (sp) include: smoking (including marijuana), tall thin stature in otherwise healthy, connective tissue disorders, pregnancy, familial history. Lung inflammation is also hypothesized to be important.