[Allergological findings in rhinitis-asthmatic subjects].

A comparison was made between skin-positive and skin-negative subjects in an allergological study of 404 patients with rhinitis and asthma. The two diseases had appeared simultaneously in 52.72% of cases, while rhinitis had appeared first in 35.14%. Respiratory disturbances had occurred more frequently before the age of 30 yr in allergic subjects and between 20 and 50 yr in skin-negative subjects. Familial allergy was noted in 34% and a personal history of skin allergy in 21%. Associations with conjunctivitis, chronic bronchitis and nasal polyposis were noted in about 50%, 13% and 4% respectively. Nearly all skin-negative subjects had disturbances the whole year round, as did 47.67% of the skin-positives, while 36.53% of the latter had disturbances in spring and summer only. A positive reaction to at least one allergen was noted in 79.95%. Pollens were positive in 70.58%, dusts, vegetables fibres and skin derivatives in 66.25%, and moulds in 33.12%. The allergens used and the number of positives obtained with each are listed. It is felt that reaction to pollen should be investigated in such subjects, even when their symptoms are not sea sonal.