Biomarker for diagnosis of allergic rhinitis

The present invention addresses the problem of providing a marker and similar for diagnosis of allergic rhinitis, which makes it possible to accurately diagnose the risks of an allergic rhinitis outbreak as well as the presence or absence of the first symptoms of allergic rhinitis. By using as biomarker a human CRLF2 (Cytokine receptor-like factor 2) gene or a human ETV7 (ets variant 7) gene, and a human CRLF2 protein or a human ETV7 protein, the increased expression of the mRNA or cDNA of said gene and the increased expression of said protein is detected, and thus allergic rhinitis, more preferably cedar pollinosis, or the presence or absence of house dust mite allergic rhinitis and the risk of outbreak thereof are accurately diagnosed.