Asthma and contact urticaria caused by rice in a housewife.
We report the case of an atopic housewife who presented with rhinoconjunctivitis-asthma and contact urticaria from handling rice and other cereals. She tolerated cooke cereals. Both skin prick tests with a rice extract (20% w/v) and a rub test with raw rice gave positive results. Bronchial challenge test with methacholine revealed a PC20 of 0.45 mg/ml. The challenge test with raw rice resulted in immediate and late clinical and spirometric responses; pretreatment with DSCG inhibited both responses. The histamine release test (HRT) with rice was positive, and we detected rice-specific IgE antibodies by REIA in the patient's serum. Skin prick tests, HRT, and RAST with a battery of cereals gave positive results. Finally, the rice REIA was inhibited by rice (75%), rye (63%), corn (64%), and wheat (51%) extracts.
Lezaun
A
A
Servicio de Alergología, Hospital Ramón y Cajal, Madrid, Spain.
Igea
J M
JM
Quirce
S
S
Cuevas
M
M
Parra
F
F
Alonso
M D
MD
Martín
J A
JA
Cano
M S
MS
D000328:Adult; D001249:Asthma / Q000175:diagnosis / Q000209:etiology*; D001985:Bronchial Provocation Tests; D003233:Conjunctivitis, Allergic / Q000209:etiology; D005260:Female; D006636:Histamine Release; D006801:Humans; D006969:Hypersensitivity, Immediate / Q000175:diagnosis / Q000209:etiology*; D007073:Immunoglobulin E / Q000032:analysis; D012275:Oryza / Q000009:adverse effects*; D012221:Rhinitis, Allergic, Perennial / Q000209:etiology; D012882:Skin Tests; D014581:Urticaria / Q000175:diagnosis / Q000209:etiology*
D007073:Immunoglobulin E