A study of the role of vitamin D in elderly subjects with perennial and/or nonallergic rhinitis. The hypothesis is that vitamin D supplementation will improve rhinitis symptoms and rhinitis related quality of life.
Rhinitis in the elderly is poorly understood as this group of patients has been ignored in almost all rhinitis studies. Vitamin D deficiency and insufficiency are very common, especially in the elderly. Vitamin D may play an important role in respiratory disease as shown by studies in asthma. This is a randomized, double-blind, placebo controlled, cross-over study. The investigators will look for the effect of vitamin D 4,000 I.U/day vs. placebo for six weeks on symptom scores and rhinitis related quality of life. This study will be performed in the period Nov. 1, 2013 and March 31, 2014, to try to avoid seasonal fluctuations of serum vitamin D due to sun exposure. The investigators will also look for possible associations between serum vitamin D at baseline and study subjects demographics, treatment, and symptom scores.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
15
Cross-over design
Rohr and Columbo Asthma, Allergy and Immunology Specialists, P.C.
Bryn Mawr, Pennsylvania, United States
Rohr and Columbo Asthma, Allergy and Immunology Specialists
Bryn Mawr, Pennsylvania, United States
Effect of vitamin D on rhinitis symptoms and rhinitis related quality of life measured by standardized questionnaire.
Time frame: 6 weeks
Associations between baseline serum vitamin D and subjects' demographics and treatment
Demographics include age, body mass index, duration of rhinitis, and presence of asthma. Treatment include drugs utilized for treatment of rhinitis expressed as total medication score.
Time frame: 6 weeks
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