title: A prospective classification of the respiratory manifestations of pollen sensitivity.
abstract: Twenty pollen sensitive subjects were classified historically as Groups I-III based upon the elicitation of lower respiratory symptoms at (I) no time of the year, (II) only during the pollen season or (III) during and apart from the pollen season respectively. Neither antigen skin sensitivity nor antigen or mecholyl inhalational sensitivity was useful in delineating these three groups. However, pulmonary function tests during the season demonstrated changes in MMEFR and airflow at 25% vital capacity in Group II subjects, confirming our classifications.
mesh_terms: D000293:Adolescent; D000328:Adult; D001249:Asthma / Q000145:classification*; D001986:Bronchial Spasm / Q000175:diagnosis; D006801:Humans; D008448:Maximal Expiratory Flow Rate; D008688:Methacholine Compounds / Q000494:pharmacology; D011058:Pollen; D011446:Prospective Studies; D012129:Respiratory Function Tests; D012621:Seasons; D012882:Skin Tests
chemical_list: D008688:Methacholine Compounds