Parietaria: an unrecognized cause of respiratory allergy in the United States
Kaufman, H.S.
Annals of Allergy 64(3): 293-296
1990
ISSN/ISBN: 0003-4738 PMID: 2310059 Document Number: 350280
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.