The review of 1010 case histories, over a period of 10 years, of patients suffering from allergic rhinopathies and/or asthma showed the following results: house dust showed the highest incidence, 32%. This was followed by spores of inhalant fungus with 22%; mattress fill, wool and feathers were next, 16%; pollens, of which the most frequent are gramineous, 14%; grasses 7%; weeds 3%, and trees 2%. The epithelium of animals 6%, occupational rhinitis 5%, and sensitivity to Candida 3%, should be kept in mind. Foods (responses cannot represent absolute evaluation) occupied the last place among the etiology of the allergic respiratory syndrome: 2%. Infectious rhinitis was not included in the statistical evaluation.