| a study on perennial rhinitis in kelantan. | ninety five patients with perennial rhinitis were examined clinically and various investigations were done in order to find out the common allergens and to assess the value of various tests in perennial rhinitis. in this study group 94% of cases were proven to be cases of allergic rhinitis. cat fur was found to be the commonest allergen. grass pollen which is a common allergen in european countries was found in only 18% of cases in the present study. x-ray of the paranasal sinuses as a routine i ... | 1989 | 2696872 |