Vitamin D level among patients with unexplained musculoskeletal symptoms

Background: Unexplained musculoskeletal (MSK) symptoms sometimes pose diagnostic and management challenges and can lead to prolonged suffering and disability. Hypovitaminosis D could be a reason for such symptoms. This study aimed to determine the vitamin D level among patients with unexplained MSK symptoms. Methods: A cross-sectional study was conducted in a private clinic of Chattogram city, Bangladesh. A total of 110 unexplained MSK patients were enrolled conveniently. MSK symptoms were assessed by rheumatologist and serum vitamin D levels were measured according to the standard laboratory procedure. Descriptive and logistic regression analyses were done. Principal component analysis was performed for the reduction of MSK symptoms. Results: The median (interquartile range) vitamin D level was 24.6 (20.0–29.0) ng/mL. Hypovitaminosis D (