title: Parietaria: an unrecognized cause of respiratory allergy in the United States.
abstract: Parietaria is considered the ragweed of the Old World. There are no prior reports of respiratory allergy due to Parietaria (P.) in North America. Following the identification of a lead case, 100 grass-sensitive patients who suffered from seasonal respiratory allergy were skin tested to P. judaica (P.j.) and P. officinalis (P.o.). Eight percent reacted. Five of 42 females (12%) and three of 58 males (5%) demonstrated skin test reactivity to extracts of P.j. and P.o. All reacted to P.j. There was a greater incidence (P less than .05) and reaction size (P less than .05) in females.
authors.forename: H S
authors.initials: HS
authors.lastname: Kaufman
mesh_terms: D000293:Adolescent; D000328:Adult; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D011058:Pollen; D011852:Radioallergosorbent Test; D012130:Respiratory Hypersensitivity / Q000175:diagnosis / Q000453:epidemiology / Q000209:etiology*; D012737:Sex Factors