Bronchiolar disorders are generally difficult to diagnose because most patients present with
nonspecific respiratory symptoms of variable duration and severity. A detailed clinical history
may point toward a specific diagnosis. Pertinent clinical questions include history of
smoking, collagen vascular disease, inhalational injury, medication usage, and organ
transplant. It is important also to evaluate possible systemic and pulmonary signs of
infection, evidence of air trapping, and high-pitched expiratory wheezing, which may …