Nasal inflammation in parietaria-allergic patients is associated with pollen exposure

The aim of this study was to confirm the relationship between exposure to pollen and inflammatory events in a group of AR patients allergic only to Parietaria by assessing inflammatory cells monthly over a 1-year period. Our study population comprised 20 patients (11 males and 9 females, median age 35 years) with AR due to Parietaria pollen who were seen consecutively at the Rhinoallergology Outpatient Clinic of the Department of Otorhinolaryngology of the University of Bari, Italy in 2011.