• primary ciliary dyskinesia

Olfactory dysfunction is common in chronic rhinosinusitis (CRS); indeed, it is one of the key diagnostic symptoms in both the European Position Paper on Rhinosinusitis1 and the American Clinical Practice Guidelines on Sinusitis.2 Objective evidence of hyposmia/anosmia has been reported in 30%–78% of patients with CRS, depending on which test is used.3 Subjective complaints of a loss of or reduction in the sense of smell have been shown to correlate well with objective measures.4 Loss of the sense of smell is an important symptom from a quality of life perspective and is …