Diagnosis of Primary Ciliary Dyskinesia.

Primary ciliary dyskinesia (PCD) is a rare genetic disease leading to bronchiectasis in most patients. In addition to the lungs, PCD might affect multiple organ systems, and patients frequently have multiple clinical problems, which require multidisciplinary management. Diagnosis of PCD needs a combination of tests, many of which require expertise and expensive equipment. Measurement of nasal nitric oxide is the first test to consider when PCD is suspected. Detailed clinical history using available predictive scores in combination with information on functional and structural aspects of lung disease is important to identify which patients should be referred for further diagnostic testing.