How should we investigate the nose in asthma?

Nasal symptoms, frequently associated with asthma, lead the physician to propose different investigations in order to manage the underlying ENT disorder. Different studies have shown that a validated questionnaire combined with a clinical examination should be the first approach in most cases. It is well known that simple X-rays of sinuses do not efficiently contribute to the diagnosis and that CT scan sometimes lacks specificity. The main investigation remains an endoscopic examination that should be performed in a second approach when symptoms resist a well-conducted treatment. [Copyright &y& Elsevier]