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Table 1 Diagnosis criteria of NAR

From: Relationship between environment factors and the number of outpatient visits at a clinic for nonallergic rhinitis in Japan, extracted from electronic medical records

Category

Criteria

A

Perennial symptoms of rhinitis are present

B

Three major symptoms (sneezing, nasal discharge, and nasal congestion) are induced by environmental changes, at some time of the day or by stress

C

Pathologic allergens responsible for perennial subjective symptoms were absent (or unknown) in the blood tests carried out to check for IgE specific to representative allergens of inhalational or dietary origin conducted at any otorhinolaryngology clinic or our clinic

  1. Information was extracted from the medical records of outpatient clinic attendees and correlated with the environmental data. Patients fulfilling all of the criteria shown were defined as having nonallegic rhinitis