Parietaria: an unrecognized cause of respiratory allergy in the United States.
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.
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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