[Correlation between nasal polyposis and perennial allergy exemplified by house dust mite and house dust allergy].

A total of 139 patients with nasal polyps were investigated by a standardized history, intradermal skin test and nasal challenge to house dust mite allergy. The aim of the study was to assess the disputed role of perennial allergy in patients with nasal polyps using allergens to the house dust mite as an example. Using our diagnostic criteria we found allergy to house dust mite in 28% of all cases. We found this diagnosis in 44.8% of patients aged 10-39. We recommend, especially in this age group, an allergy test, if necessary with the appropriate therapy. Test correlations are illustrated in 174 patients who have been examined by the above methods. Good reproducibility was found by the nasal challenge, which led to the right diagnosis in 92%, compared with 81% by a standardized history. Therefore, it can be considered to be the key to the diagnosis of allergy.