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Asthma is a chronic ,inflammatory ,respiratory tract disease accompanied by hypersensitivity of airways, recurring wheezing episodes, respiratory distress and coughing. The aim of this study was to estimate vitamin D level and specific IgE level in asthmatic children who were on controller medication and correlated their serum level with asthma control . Our results clarified that The serum vitamin[D] levels were closely related to asthma attacks. As,There were statistically significant positive correlations between serum vitamin D level and asthma control in asthmatic children. There were no significant difference in mean serum vitamin [D] between male and female and according to parent consanguinity while shows significant difference regarding order of sibling. there were no significant difference in mean serum vitamin [D] according to family history of atopy and passive smoking, while shows significant difference regarding family history of asthma, associated allergic condition, day time symptoms, night time awakness, degree of asthma control, recurrent hospital admission , interference with activity and frequency of exacerbation and influenza &pneumococcal vaccination. significant difference in mean serum vitamin [D] according to food born allergen: apple ,banana ,casein ,cow milk ,egg white, peanut while regarding airborne allergen shows nonsignificant difference with ,Der.pteronyssinus, Der.farinae ,Cockroach and Honey bee venom and Aspergillus fumigatus . Common wasp venom , Altearia alternate, Honey bee venum,Birch ,Candida albican ,Dog epith. and cat epithelium demonstrated significant difference. From our results, it would be concluded that there was a significant correlation between vitamin [D] level and asthma control in asthmatic children .

Key words

Childhood asthma, Vitamin [D] , Specific IgE.