Three cases of bronchial asthma after middle ages associated with pets.

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Abstract
Three cases of bronchial asthma after middle ages associated with pets were presented. Case 1 was a 39-year-old man who was admitted due to exacerbation of asthma after having fed a cat and a dog for 2 years. IgE-RAST was positive for cat fur and house dust. Inhalation test of cat hair antigen was positive. His symptoms improved by avoidance of the cat. Case 2 was 54-year-old woman suffering from asthma for 6 years after having fed a cat. IgE-RAST was positive for dog hair and cat fur. Symptoms did not improve by any treatment because she could not give up pets. Case 3 was a 45-year-old womansuffering from asthma attacks for two months. She had kept a dog for 1 year. IgE-RAST was positive for dog hair. Her symptoms disappeared by avoidance of the dog. Patients with pet allergy have increased in recent years because of the pet boom, but it is not so common to have asthma attacks in aged people. Bronchial asthma caused by allergens of pets easily improves by avoidance of them and it is important to establish early diagnosis of this disorder.

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