• Khaled Saad, Abobakr Abdelmoghny, Mohamed Diab Aboul-Khair, Yasser Farouk Abdel-Raheem, Eman Fathalla Gad, Ahmed El-Sayed Hammour, Bahaa Hawary, Asmaa M Zahran, Mohamd A Alblihed, and Amira Elhoufey.
• Faculty of Medicine, Department of Pediatrics, 68796Assiut University, Assiut, Egypt.
• Ear Nose Throat J. 2020 Sep 1; 99 (8): 508-512.

AbstractObjective: This study aimed to assess the serum levels of vitamin D in an Egyptian cohort of children with allergic rhinitis (AR) and to evaluate any correlation of vitamin D status with the disease severity. Patient and methods: One hundred twenty children with AR and 100 healthy children were included in our study. We studied the serum levels of vitamin D 25(OH)D and 1,25(OH)2D in all participants. The associations between vitamin D levels and clinical characteristics of AR were examined. Results: In AR group, the serum levels of calcium, (25(OH)D and 1,25(OH)2D levels were significantly lower (p < .0001, p < .001, and p < .0001, respectively) in AR children than in controls. Furthermore, the mean 25-OHD3 levels in patients with moderate/severe AR were significantly lower than those with mild AR (p < .001). We found significant negative correlations between mean 25(OH)D levels and total nasal symptom score (r = -.62, p = .002) and total immunoglobulin E levels (r = -.27, p = .013) in AR group. Conclusions: Vitamin D deficiency is a frequent finding among Egyptian children with AR when compared to the healthy group. A significant inverse association was observed between vitamin D levels and AR disease severity.

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